Classification
363 - Other social problems & services
370 - Education
333 - Economics of land & energy
12
700 - The arts; fine & decorative arts
12
330 - Economics
10
320 - Political science
9
380 - Commerce, communications & transportation
9
600 - Technology
9
900 - History & geography
9
000 - Computer science, information & general works
7
140 - Specific philosophical schools
7
610 - Medicine & health
7
620 - Engineering & allied operations
6
551 - Geology, hydrology & meteorology
5
300 - Social sciences
3
340 - Law
3
500 - Natural sciences & mathematics
3
630 - Agriculture & related technologies
3
720 - Architecture
3
200 - Religion
2
400 - Language
2
410 - Linguistics
2
576 - Genetics & evolution
2
100 - Philosophy & psychology
1
160 - Logic
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
414 - Phonology & phonetics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
657 - Accounting
1
658 - General management
1
800 - Literature & rhetoric
1