Classification
000 - Computer science, information & general works
380 - Commerce, communications & transportation
576 - Genetics & evolution
333 - Economics of land & energy
34
700 - The arts; fine & decorative arts
31
600 - Technology
24
363 - Other social problems & services
21
330 - Economics
19
620 - Engineering & allied operations
18
140 - Specific philosophical schools
15
610 - Medicine & health
14
900 - History & geography
13
500 - Natural sciences & mathematics
12
320 - Political science
8
551 - Geology, hydrology & meteorology
8
580 - Plants (Botany)
8
581 - Specific topics in natural history
8
530 - Physics
7
304 - Factors affecting social behavior
6
414 - Phonology & phonetics
6
540 - Chemistry & allied sciences
6
658 - General management
6
340 - Law
5
370 - Education
5
400 - Language
5
410 - Linguistics
4
300 - Social sciences
3
612 - Human physiology
3
720 - Architecture
3
657 - Accounting
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
160 - Logic
1
170 - Ethics
1
200 - Religion
1
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
630 - Agriculture & related technologies
1
650 - Management & auxiliary services
1
770 - Photography, photographs & computer art
1
920 - Biography, genealogy & insignia
1