Classification
363 - Other social problems & services
330 - Economics
19
000 - Computer science, information & general works
15
333 - Economics of land & energy
15
700 - The arts; fine & decorative arts
15
600 - Technology
13
630 - Agriculture & related technologies
13
610 - Medicine & health
10
620 - Engineering & allied operations
10
320 - Political science
9
344 - Labor, social, education & cultural law
9
551 - Geology, hydrology & meteorology
9
380 - Commerce, communications & transportation
8
580 - Plants (Botany)
8
581 - Specific topics in natural history
8
140 - Specific philosophical schools
7
900 - History & geography
6
340 - Law
5
370 - Education
3
720 - Architecture
3
400 - Language
2
540 - Chemistry & allied sciences
2
800 - Literature & rhetoric
2
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
612 - Human physiology
1
657 - Accounting
1
658 - General management
1