Classification
330 - Economics
13
333 - Economics of land & energy
12
320 - Political science
4
700 - The arts; fine & decorative arts
4
000 - Computer science, information & general works
3
363 - Other social problems & services
3
380 - Commerce, communications & transportation
3
551 - Geology, hydrology & meteorology
3
658 - General management
3
140 - Specific philosophical schools
2
301 - Sociology & anthropology
2
580 - Plants (Botany)
2
610 - Medicine & health
2
630 - Agriculture & related technologies
2
800 - Literature & rhetoric
2
294 - Religions of Indic origin
1
370 - Education
1
577 - Ecology
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
634 - Orchards, fruits & forestry
1
670 - Manufacturing
1