Classification
658 - General management
2,661
330 - Economics
1,618
621 - Applied physics
1,512
670 - Manufacturing
1,140
620 - Engineering & allied operations
980
000 - Computer science, information & general works
689
333 - Economics of land & energy
663
700 - The arts; fine & decorative arts
597
600 - Technology
571
610 - Medicine & health
440
363 - Other social problems & services
395
580 - Plants (Botany)
340
338 - Production
306
900 - History & geography
300
629 - Other branches of engineering
281
500 - Natural sciences & mathematics
259
320 - Political science
255
630 - Agriculture & related technologies
249
300 - Social sciences
240
380 - Commerce, communications & transportation
222
140 - Specific philosophical schools
200
791 - Public performances
198
650 - Management & auxiliary services
173
381 - Commerce
159
660 - Chemical engineering
153
302 - Social interaction
152
006 - Special computer methods
150
745 - Decorative arts
150
551 - Geology, hydrology & meteorology
147
540 - Chemistry & allied sciences
143
003 - Systems
141
331 - Labor economics
136
576 - Genetics & evolution
128
004 - Data processing & computer science
96
005 - Computer programming, programs & data
95
581 - Specific topics in natural history
93
777 - [Unassigned]
93
384 - Communications; telecommunication
90
153 - Mental processes & intelligence
87
340 - Law
76
530 - Physics
75
304 - Factors affecting social behavior
68
615 - Pharmacology & therapeutics
68
370 - Education
67
720 - Architecture
62
628 - Sanitary & municipal engineering
61
800 - Literature & rhetoric
59
414 - Phonology & phonetics
56
519 - Probabilities & applied mathematics
54
664 - Food technology
43
more ...