Classification
500 - Natural sciences & mathematics
658 - General management
2,467
005 - Computer programming, programs & data
2,363
620 - Engineering & allied operations
2,354
330 - Economics
2,080
300 - Social sciences
1,569
302 - Social interaction
1,517
331 - Labor economics
1,376
670 - Manufacturing
1,367
004 - Data processing & computer science
1,082
000 - Computer science, information & general works
974
384 - Communications; telecommunication
953
006 - Special computer methods
716
745 - Decorative arts
490
338 - Production
446
520 - Astronomy & allied sciences
426
700 - The arts; fine & decorative arts
339
381 - Commerce
301
333 - Economics of land & energy
288
600 - Technology
279
610 - Medicine & health
279
363 - Other social problems & services
268
510 - Mathematics
218
100 - Philosophy & psychology
198
380 - Commerce, communications & transportation
195
576 - Genetics & evolution
189
153 - Mental processes & intelligence
176
580 - Plants (Botany)
157
519 - Probabilities & applied mathematics
153
374 - Adult education
152
621 - Applied physics
146
581 - Specific topics in natural history
144
650 - Management & auxiliary services
144
158 - Applied psychology
140
530 - Physics
139
612 - Human physiology
131
900 - History & geography
127
320 - Political science
121
370 - Education
118
303 - Social processes
115
551 - Geology, hydrology & meteorology
114
332 - Financial economics
106
364 - Criminology
98
001 - Knowledge
95
140 - Specific philosophical schools
85
025 - Library operations
76
615 - Pharmacology & therapeutics
72
540 - Chemistry & allied sciences
66
340 - Law
53
629 - Other branches of engineering
45
more ...