Classification
333 - Economics of land & energy
658 - General management
330 - Economics
38
700 - The arts; fine & decorative arts
28
600 - Technology
25
000 - Computer science, information & general works
20
363 - Other social problems & services
16
610 - Medicine & health
13
620 - Engineering & allied operations
12
580 - Plants (Botany)
10
900 - History & geography
10
140 - Specific philosophical schools
9
380 - Commerce, communications & transportation
9
320 - Political science
8
576 - Genetics & evolution
8
630 - Agriculture & related technologies
6
551 - Geology, hydrology & meteorology
5
581 - Specific topics in natural history
3
297 - Islam, Babism & Bahai Faith
2
370 - Education
2
400 - Language
2
530 - Physics
2
720 - Architecture
2
100 - Philosophy & psychology
1
170 - Ethics
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
368 - Insurance
1
381 - Commerce
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
670 - Manufacturing
1
800 - Literature & rhetoric
1