Classification
000 - Computer science, information & general works
700 - The arts; fine & decorative arts
1,412
600 - Technology
1,134
333 - Economics of land & energy
997
610 - Medicine & health
732
363 - Other social problems & services
650
330 - Economics
622
620 - Engineering & allied operations
588
380 - Commerce, communications & transportation
536
900 - History & geography
501
580 - Plants (Botany)
462
140 - Specific philosophical schools
425
540 - Chemistry & allied sciences
381
576 - Genetics & evolution
340
500 - Natural sciences & mathematics
329
320 - Political science
298
551 - Geology, hydrology & meteorology
267
530 - Physics
262
630 - Agriculture & related technologies
228
370 - Education
185
400 - Language
159
300 - Social sciences
149
340 - Law
143
581 - Specific topics in natural history
143
414 - Phonology & phonetics
136
100 - Philosophy & psychology
133
720 - Architecture
132
658 - General management
129
800 - Literature & rhetoric
124
410 - Linguistics
107
304 - Factors affecting social behavior
84
612 - Human physiology
69
200 - Religion
52
170 - Ethics
50
301 - Sociology & anthropology
44
361 - Social problems & social welfare in general
42
615 - Pharmacology & therapeutics
31
780 - Music
27
657 - Accounting
19
550 - Earth sciences
17
297 - Islam, Babism & Bahai Faith
15
590 - Animals (Zoology)
15
120 - Epistemology, causation & humankind
14
520 - Astronomy & allied sciences
13
770 - Photography, photographs & computer art
13
791 - Public performances
10
160 - Logic
7
360 - Social problems & services; associations
7
350 - Public administration & military science
6
364 - Criminology
6
more ...