Classification
330 - Economics
19,622
320 - Political science
5,684
820 - English & Old English literatures
5,415
610 - Medicine & health
5,139
340 - Law
2,857
333 - Economics of land & energy
2,096
900 - History & geography
1,989
300 - Social sciences
1,700
370 - Education
1,394
363 - Other social problems & services
1,375
600 - Technology
1,272
304 - Factors affecting social behavior
1,193
658 - General management
933
338 - Production
918
700 - The arts; fine & decorative arts
853
620 - Engineering & allied operations
765
616 - Diseases
762
380 - Commerce, communications & transportation
735
306 - Culture & institutions
639
630 - Agriculture & related technologies
528
301 - Sociology & anthropology
509
621 - Applied physics
490
910 - Geography & travel
481
327 - International relations
476
551 - Geology, hydrology & meteorology
466
341 - Law of nations
464
940 - History of Europe
452
000 - Computer science, information & general works
448
800 - Literature & rhetoric
419
005 - Computer programming, programs & data
418
006 - Special computer methods
409
305 - Social groups
405
200 - Religion
387
140 - Specific philosophical schools
374
230 - Christianity & Christian theology
361
500 - Natural sciences & mathematics
356
280 - Christian denominations & sects
348
170 - Ethics
325
100 - Philosophy & psychology
316
004 - Data processing & computer science
311
240 - Christian moral & devotional theology
307
780 - Music
296
331 - Labor economics
292
520 - Astronomy & allied sciences
292
577 - Ecology
289
250 - Christian orders & local church
280
332 - Financial economics
269
360 - Social problems & services; associations
248
530 - Physics
232
650 - Management & auxiliary services
230
more ...