Classification
330 - Economics
3,770
900 - History & geography
3,699
658 - General management
3,207
300 - Social sciences
3,093
320 - Political science
2,493
306 - Culture & institutions
2,346
301 - Sociology & anthropology
1,830
700 - The arts; fine & decorative arts
1,803
370 - Education
1,560
302 - Social interaction
1,469
610 - Medicine & health
1,294
616 - Diseases
1,267
304 - Factors affecting social behavior
1,179
800 - Literature & rhetoric
1,108
333 - Economics of land & energy
1,032
331 - Labor economics
1,027
338 - Production
962
305 - Social groups
922
100 - Philosophy & psychology
872
571 - Physiology & related subjects
866
000 - Computer science, information & general works
807
005 - Computer programming, programs & data
807
200 - Religion
802
140 - Specific philosophical schools
776
363 - Other social problems & services
761
600 - Technology
717
500 - Natural sciences & mathematics
711
004 - Data processing & computer science
668
006 - Special computer methods
655
620 - Engineering & allied operations
649
380 - Commerce, communications & transportation
648
340 - Law
580
630 - Agriculture & related technologies
521
400 - Language
470
580 - Plants (Botany)
463
780 - Music
395
930 - History of ancient world to ca. 499
394
410 - Linguistics
387
650 - Management & auxiliary services
387
612 - Human physiology
372
303 - Social processes
369
791 - Public performances
362
670 - Manufacturing
350
809 - History, description & criticism
346
170 - Ethics
344
572 - Biochemistry
337
155 - Differential & developmental psychology
328
577 - Ecology
314
720 - Architecture
300
576 - Genetics & evolution
284
more ...