Classification
363 - Other social problems & services
380 - Commerce, communications & transportation
576 - Genetics & evolution
700 - The arts; fine & decorative arts
25
333 - Economics of land & energy
24
600 - Technology
22
000 - Computer science, information & general works
21
140 - Specific philosophical schools
19
620 - Engineering & allied operations
18
610 - Medicine & health
16
900 - History & geography
16
330 - Economics
13
320 - Political science
11
551 - Geology, hydrology & meteorology
10
340 - Law
9
581 - Specific topics in natural history
9
500 - Natural sciences & mathematics
7
720 - Architecture
7
800 - Literature & rhetoric
7
304 - Factors affecting social behavior
6
580 - Plants (Botany)
6
300 - Social sciences
5
370 - Education
5
414 - Phonology & phonetics
5
540 - Chemistry & allied sciences
5
658 - General management
5
410 - Linguistics
3
530 - Physics
3
612 - Human physiology
3
630 - Agriculture & related technologies
3
170 - Ethics
2
400 - Language
2
657 - Accounting
2
364 - Criminology
1
650 - Management & auxiliary services
1