Classification
330 - Economics
29
320 - Political science
22
300 - Social sciences
4
000 - Computer science, information & general works
3
333 - Economics of land & energy
3
340 - Law
3
361 - Social problems & social welfare in general
3
370 - Education
3
900 - History & geography
3
170 - Ethics
2
301 - Sociology & anthropology
2
338 - Production
2
500 - Natural sciences & mathematics
2
600 - Technology
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
658 - General management
2
200 - Religion
1
327 - International relations
1
341 - Law of nations
1
345 - Criminal law
1
360 - Social problems & services; associations
1
363 - Other social problems & services
1
371 - Schools & their activities; special education
1
380 - Commerce, communications & transportation
1
570 - Life sciences; biology
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1