520|520 - Astronomy & allied sciences
797|797 - Aquatic & air sports
953|953 - Arabian Peninsula & adjacent areas
998|998 - Arctic islands & Antarctica
022|022 - Administration of physical plant
158|158 - Applied psychology
168|168 - Argument & persuasion
169|169 - Analogy
180|180 - Ancient, medieval & eastern philosophy
185|185 - Aristotelian philosophy
229|229 - Apocrypha & pseudepigrapha
239|239 - Apologetics & polemics
267|267 - Associations for religious work
283|283 - Anglican churches
354|354 - Administration of economy & environment
358|358 - Air & other specialized forces
366|366 - Associations
374|374 - Adult education
494|494 - Altaic, Uralic, Hyperborean & Dravidian
496|496 - African languages
499|499 - Austronesian & other languages
512|512 - Algebra
513|513 - Arithmetic
515|515 - Analysis
543|543 - Analytical chemistry
590|590 - Animals (Zoology)
595|595 - Arthropods
621|621 - Applied physics
630|630 - Agriculture & related technologies
636|636 - Animal husbandry
657|657 - Accounting
659|659 - Advertising & public relations
692|692 - Auxiliary construction practices
711|711 - Area planning
720|720 - Architecture
721|721 - Architectural structure
722|722 - Architecture to ca. 300
723|723 - Architecture from ca. 300 to 1399
724|724 - Architecture from 1400
739|739 - Art metalwork
796|796 - Athletic & outdoor sports & games
810|810 - American literature in English
811|811 - American poetry in English
812|812 - American drama in English
813|813 - American fiction in English
814|814 - American essays in English
815|815 - American speeches in English
816|816 - American letters in English
817|817 - American humor & satire in English
818|818 - American miscellaneous writings
894|894 - Altaic, Uralic, Hyperborean & Dravidian
896|896 - African literatures
899|899 - Austronesian & other literatures
912|912 - Atlases, maps, charts & plans
965|965 - Algeria
982|982 - Argentina
994|994 - Australia
997|997 - Atlantic Ocean islands
014|014 - Bibliographies of anonymous & pseudonymous works
018|018 - Catalogs arranged by author, date, etc.
031|031 - Encyclopedias in American English
051|051 - Serials in American English
061|061 - Organizations in North America
065|065 - Organizations in Italy & adjacent islands
066|066 - Organizations in Iberian Peninsula & adjacent islands
068|068 - Organizations in other geographic areas
071|071 - Newspapers in North America
075|075 - Newspapers in Italy & adjacent islands
076|076 - Newspapers in Iberian Peninsula & adjacent islands
079|079 - Newspapers in other geographic areas
081|081 - Collections in American English
154|154 - Subconscious & altered states
193|193 - Philosophy of Germany & Austria
199|199 - Philosophy in other geographic areas
212|212 - Existence, knowability & attributes of God
226|226 - Gospels & Acts
246|246 - Use of art in Christianity
247|247 - Church furnishings & articles
254|254 - Parish administration
265|265 - Sacraments, other rites & acts
275|275 - History of Christianity in Asia
276|276 - History of Christianity in Africa
277|277 - History of Christianity in North America
278|278 - History of Christianity in South America
279|279 - History of Christianity in other areas
286|286 - Baptist, Disciples of Christ & Adventist
301|301 - Sociology & anthropology
304|304 - Factors affecting social behavior
315|315 - General statistics of Asia
316|316 - General statistics of Africa
317|317 - General statistics of North America
318|318 - General statistics of South America
319|319 - General statistics of other areas
342|342 - Constitutional & administrative law
349|349 - Law of specific jurisdictions & areas
350|350 - Public administration & military science
351|351 - Public administration
352|352 - General considerations of public administration
353|353 - Specific fields of public administration
360|360 - "Social problems & services; associations"
369|369 - Miscellaneous kinds of associations
371|371 - "Schools & their activities; special education"
387|387 - Water, air & space transportation
391|391 - Costume & personal appearance
418|418 - Standard usage & applied linguistics
493|493 - Non-Semitic Afro-Asiatic languages
495|495 - Languages of East & Southeast Asia
497|497 - North American native languages
498|498 - South American native languages
518|518 - Numerical analysis
519|519 - Probabilities & applied mathematics
540|540 - Chemistry & allied sciences
555|555 - Earth sciences of Asia
556|556 - Earth sciences of Africa
557|557 - Earth sciences of North America
558|558 - Earth sciences of South America
559|559 - Earth sciences of other areas
565|565 - Fossil arthropods
573|573 - Specific physiological systems in animals
579|579 - Microorganisms, fungi & algae
611|611 - Human anatomy, cytology & histology
620|620 - Engineering & allied operations
650|650 - Management & auxiliary services
666|666 - Ceramic & allied technologies
672|672 - Iron, steel & other iron alloys
683|683 - Hardware & household appliances
686|686 - Printing & related activities
687|687 - Clothing & accessories
697|697 - Heating, ventilating & air-conditioning
700|700 - "The arts; fine & decorative arts"
701|701 - Philosophy of fine & decorative arts
702|702 - Miscellany of fine & decorative arts
703|703 - Dictionaries of fine & decorative arts
704|704 - Special topics in fine & decorative arts
705|705 - Serial publications of fine & decorative arts
710|710 - Civic & landscape art
712|712 - Landscape architecture
713|713 - Landscape architecture of trafficways
717|717 - Structures in landscape architecture
730|730 - "Plastic arts; sculpture"
738|738 - Ceramic arts
740|740 - Drawing & decorative arts
745|745 - Decorative arts
746|746 - Textile arts
749|749 - Furniture & accessories
753|753 - Symbolism, allegory, mythology & legend
760|760 - "Graphic arts; printmaking & prints"
766|766 - Mezzotinting, aquatinting & related processes
770|770 - Photography, photographs & computer art
776|776 - Computer art (Digital art)
790|790 - Recreational & performing arts
793|793 - Indoor games & amusements
798|798 - Equestrian sports & animal racing
893|893 - Non-Semitic Afro-Asiatic literatures
895|895 - Literatures of East & Southeast Asia
897|897 - North American native literatures
898|898 - South American native literatures
904|904 - Collected accounts of events
913|913 - Geography of & travel in ancient world
915|915 - Geography of & travel in Asia
916|916 - Geography of & travel in Africa
917|917 - Geography of & travel in North America
918|918 - Geography of & travel in South America
919|919 - Geography of & travel in other areas
930|930 - History of ancient world to ca. 499
937|937 - Italy & adjacent territories to 476
939|939 - Other parts of ancient world to ca. 640
945|945 - Italian Peninsula & adjacent islands
946|946 - Iberian Peninsula & adjacent islands
950|950 - "History of Asia; Far East"
951|951 - China & adjacent areas
954|954 - "South Asia; India"
958|958 - Central Asia
959|959 - Southeast Asia
960|960 - History of Africa
964|964 - Northwest African coast & offshore islands
966|966 - West Africa & offshore islands
967|967 - Central Africa & offshore islands
968|968 - "Southern Africa; Republic of South Africa"
970|970 - History of North America
972|972 - "Middle America; Mexico"
980|980 - History of South America
990|990 - History of other areas
000|000 - Computer science, information & general works
004|004 - Data processing & computer science
005|005 - Computer programming, programs & data
006|006 - Special computer methods
007|007 - [Unassigned]
008|008 - [Unassigned]
009|009 - [Unassigned]
010|010 - Bibliography
011|011 - Bibliographies
012|012 - Bibliographies of individuals
013|013 - [Unassigned]
015|015 - Bibliographies of works from specific places
016|016 - Bibliographies of works on specific subjects
017|017 - General subject catalogs
019|019 - Dictionary catalogs
020|020 - Library & information sciences
021|021 - Library relationships
023|023 - Personnel management
024|024 - [Unassigned]
025|025 - Library operations
026|026 - Libraries for specific subjects
027|027 - General libraries
028|028 - Reading & use of other information media
029|029 - [Unassigned]
030|030 - General encyclopedic works
032|032 - Encyclopedias in English
033|033 - Encyclopedias in other Germanic languages
034|034 - Encyclopedias in French, Occitan & Catalan
035|035 - Encyclopedias in Italian, Romanian & related languages
036|036 - Encyclopedias in Spanish & Portuguese
037|037 - Encyclopedias in Slavic languages
038|038 - Encyclopedias in Scandinavian languages
039|039 - Encyclopedias in other languages
040|040 - [Unassigned]
041|041 - [Unassigned]
042|042 - [Unassigned]
043|043 - [Unassigned]
044|044 - [Unassigned]
045|045 - [Unassigned]
046|046 - [Unassigned]
047|047 - [Unassigned]
048|048 - [Unassigned]
049|049 - [Unassigned]
050|050 - General serial publications
052|052 - Serials in English
053|053 - Serials in other Germanic languages
054|054 - Serials in French, Occitan & Catalan
055|055 - Serials in Italian, Romanian & related languages
056|056 - Serials in Spanish & Portuguese
057|057 - Serials in Slavic languages
058|058 - Serials in Scandinavian languages
059|059 - Serials in other languages
060|060 - General organizations & museum science
062|062 - "Organizations in British Isles; in England"
063|063 - "Organizations in central Europe; in Germany"
064|064 - Organizations in France & Monaco
067|067 - "Organizations in eastern Europe; in Russia"
070|070 - News media, journalism & publishing
072|072 - "Newspapers in British Isles; in England"
073|073 - "Newspapers in central Europe; in Germany"
074|074 - Newspapers in France & Monaco
077|077 - "Newspapers in eastern Europe; in Russia"
078|078 - Newspapers in Scandinavia
080|080 - General collections
083|083 - Collections in other Germanic languages
084|084 - Collections in French, Occitan & Catalan
085|085 - Collections in Italian, Romanian & related languages
086|086 - Collections in Spanish & Portuguese
087|087 - Collections in Slavic languages
088|088 - Collections in Scandinavian languages
089|089 - Collections in other languages
090|090 - Manuscripts & rare books
091|091 - Manuscripts
093|093 - Incunabula
095|095 - Books notable for bindings
096|096 - Books notable for illustrations
097|097 - Books notable for ownership or origin
098|098 - Prohibited works, forgeries & hoaxes
099|099 - Books notable for format
102|102 - Miscellany
103|103 - Dictionaries & encyclopedias
104|104 - [Unassigned]
105|105 - Serial publications
106|106 - Organizations & management
107|107 - Education, research & related topics
108|108 - Kinds of persons treatment
109|109 - Historical & collected persons treatment
110|110 - Metaphysics
112|112 - [Unassigned]
114|114 - Space
116|116 - Change
119|119 - Number & quantity
120|120 - Epistemology, causation & humankind
122|122 - Causation
125|125 - [Unassigned]
128|128 - Humankind
129|129 - Origin & destiny of individual souls
130|130 - Parapsychology & occultism
131|131 - Parapsychological & occult methods
132|132 - [Unassigned]
133|133 - Specific topics in parapsychology & occultism
134|134 - [Unassigned]
135|135 - Dreams & mysteries
136|136 - [Unassigned]
137|137 - Divinatory graphology
140|140 - Specific philosophical schools
141|141 - Idealism & related systems
142|142 - Critical philosophy
144|144 - Humanism & related systems
145|145 - Sensationalism
146|146 - Naturalism & related systems
147|147 - Pantheism & related systems
148|148 - Eclecticism, liberalism & traditionalism
149|149 - Other philosophical systems
151|151 - [Unassigned]
153|153 - Mental processes & intelligence
155|155 - Differential & developmental psychology
156|156 - Comparative psychology
157|157 - [Unassigned]
159|159 - [Unassigned]
163|163 - [Unassigned]
164|164 - [Unassigned]
165|165 - Fallacies & sources of error
171|171 - Ethical systems
172|172 - Political ethics
173|173 - Ethics of family relationships
174|174 - Occupational ethics
175|175 - Ethics of recreation & leisure
177|177 - Ethics of social relations
179|179 - Other ethical norms
181|181 - Eastern philosophy
182|182 - Pre-Socratic Greek philosophies
183|183 - Socratic & related philosophies
184|184 - Platonic philosophy
186|186 - Skeptic & Neoplatonic philosophies
187|187 - Epicurean philosophy
189|189 - Medieval western philosophy
191|191 - Philosophy of United States & Canada
194|194 - Philosophy of France
195|195 - Philosophy of Italy
196|196 - Philosophy of Spain & Portugal
198|198 - Philosophy of Scandinavia
201|201 - Religious mythology & social theology
203|203 - Public worship & other practices
204|204 - Religious experience, life & practice
206|206 - Leaders & organization
207|207 - Missions & religious education
213|213 - Creation
216|216 - [Unassigned]
217|217 - [Unassigned]
218|218 - Humankind
219|219 - [Unassigned]
221|221 - Old Testament (Tanakh)
222|222 - Historical books of Old Testament
223|223 - Poetic books of Old Testament
224|224 - Prophetic books of Old Testament
225|225 - New Testament
228|228 - Revelation (Apocalypse)
230|230 - Christianity & Christian theology
232|232 - Jesus Christ & his family
233|233 - Humankind
234|234 - Salvation & grace
235|235 - Spiritual beings
236|236 - Eschatology
237|237 - [Unassigned]
238|238 - Creeds & catechisms
240|240 - Christian moral & devotional theology
241|241 - Christian ethics
242|242 - Devotional literature
243|243 - Evangelistic writings for individuals
244|244 - [Unassigned]
245|245 - [Unassigned]
248|248 - Christian experience, practice & life
249|249 - Christian observances in family life
250|250 - Christian orders & local church
251|251 - Preaching
253|253 - Pastoral office & work
255|255 - Religious congregations & orders
256|256 - [Unassigned]
257|257 - [Unassigned]
258|258 - [Unassigned]
259|259 - Pastoral care of families & kinds of persons
260|260 - Social & ecclesiastical theology
261|261 - Social theology
263|263 - Days, times & places of observance
268|268 - Religious education
269|269 - Spiritual renewal
270|270 - History of Christianity & Christian church
273|273 - Doctrinal controversies & heresies
274|274 - History of Christianity in Europe
280|280 - Christian denominations & sects
281|281 - Early church & Eastern churches
282|282 - Roman Catholic Church
284|284 - Protestants of Continental origin
285|285 - Presbyterian, Reformed & Congregational
287|287 - Methodist & related churches
288|288 - [Unassigned]
289|289 - Other denominations & sects
291|291 - [Unassigned]
292|292 - Greek & Roman religion
293|293 - Germanic religion
295|295 - Zoroastrianism
296|296 - Judaism
297|297 - Islam, Babism & Bahai Faith
298|298 - (Optional number)
300|300 - Social sciences
302|302 - Social interaction
303|303 - Social processes
305|305 - Social groups
308|308 - [Unassigned]
309|309 - [Unassigned]
310|310 - Collections of general statistics
311|311 - [Unassigned]
312|312 - [Unassigned]
313|313 - [Unassigned]
314|314 - General statistics of Europe
320|320 - Political science
321|321 - Systems of governments & states
322|322 - Relation of state to organized groups
323|323 - Civil & political rights
324|324 - The political process
325|325 - International migration & colonization
326|326 - Slavery & emancipation
327|327 - International relations
328|328 - The legislative process
329|329 - [Unassigned]
331|331 - Labor economics
332|332 - Financial economics
333|333 - Economics of land & energy
334|334 - Cooperatives
335|335 - Socialism & related systems
336|336 - Public finance
337|337 - International economics
339|339 - Macroeconomics & related topics
340|340 - Law
341|341 - Law of nations
343|343 - Military, tax, trade & industrial law
344|344 - Labor, social, education & cultural law
345|345 - Criminal law
346|346 - Private law
348|348 - Laws, regulations & cases
355|355 - Military science
356|356 - Infantry forces & warfare
357|357 - Mounted forces & warfare
359|359 - Sea forces & warfare
361|361 - Social problems & social welfare in general
362|362 - Social welfare problems & services
363|363 - Other social problems & services
365|365 - Penal & related institutions
367|367 - General clubs
368|368 - Insurance
370|370 - Education
372|372 - Elementary education
373|373 - Secondary education
375|375 - Curricula
376|376 - [Unassigned]
377|377 - [Unassigned]
378|378 - Higher education
379|379 - Public policy issues in education
380|380 - Commerce, communications & transportation
382|382 - International commerce
383|383 - Postal communication
384|384 - "Communications; telecommunication"
385|385 - Railroad transportation
386|386 - Inland waterway & ferry transportation
388|388 - "Transportation; ground transportation"
389|389 - Metrology & standardization
393|393 - Death customs
394|394 - General customs
395|395 - Etiquette (Manners)
396|396 - [Unassigned]
397|397 - [Unassigned]
399|399 - Customs of war & diplomacy
400|400 - Language
402|402 - Miscellany
403|403 - Dictionaries & encyclopedias
404|404 - Special topics
405|405 - Serial publications
406|406 - Organizations & management
407|407 - Education, research & related topics
408|408 - Kinds of persons treatment
409|409 - Geographic & persons treatment
413|413 - Dictionaries
415|415 - Grammar
416|416 - [Unassigned]
417|417 - Dialectology & historical linguistics
419|419 - Sign languages
423|423 - English dictionaries
424|424 - [Unassigned]
425|425 - English grammar
426|426 - [Unassigned]
427|427 - English language variations
428|428 - Standard English usage
429|429 - Old English (Anglo-Saxon)
430|430 - "Germanic languages; German"
431|431 - German writing systems & phonology
432|432 - German etymology
433|433 - German dictionaries
434|434 - [Unassigned]
435|435 - German grammar
436|436 - [Unassigned]
437|437 - German language variations
438|438 - Standard German usage
439|439 - Other Germanic languages
440|440 - "Romance languages; French"
443|443 - French dictionaries
444|444 - [Unassigned]
445|445 - French grammar
446|446 - [Unassigned]
447|447 - French language variations
448|448 - Standard French usage
449|449 - Occitan & Catalan
450|450 - Italian, Romanian & related languages
451|451 - Italian writing systems & phonology
452|452 - Italian etymology
453|453 - Italian dictionaries
454|454 - [Unassigned]