Classification
900 - History & geography
2,625
330 - Economics
2,406
820 - English & Old English literatures
1,855
320 - Political science
1,602
610 - Medicine & health
1,292
500 - Natural sciences & mathematics
1,183
340 - Law
1,121
616 - Diseases
921
300 - Social sciences
826
700 - The arts; fine & decorative arts
740
333 - Economics of land & energy
681
620 - Engineering & allied operations
623
306 - Culture & institutions
517
370 - Education
506
100 - Philosophy & psychology
489
006 - Special computer methods
488
363 - Other social problems & services
473
304 - Factors affecting social behavior
467
800 - Literature & rhetoric
459
301 - Sociology & anthropology
455
658 - General management
424
551 - Geology, hydrology & meteorology
423
410 - Linguistics
379
338 - Production
367
621 - Applied physics
358
612 - Human physiology
356
005 - Computer programming, programs & data
352
200 - Religion
351
530 - Physics
348
600 - Technology
338
140 - Specific philosophical schools
316
400 - Language
300
000 - Computer science, information & general works
295
305 - Social groups
294
617 - Surgery & related medical specialties
294
910 - Geography & travel
285
510 - Mathematics
275
576 - Genetics & evolution
272
571 - Physiology & related subjects
260
580 - Plants (Botany)
256
380 - Commerce, communications & transportation
252
577 - Ecology
241
004 - Data processing & computer science
238
520 - Astronomy & allied sciences
238
501 - Philosophy & theory
237
930 - History of ancient world to ca. 499
231
332 - Financial economics
228
519 - Probabilities & applied mathematics
227
515 - Analysis
223
940 - History of Europe
201
more ...