Classification
000 - Computer science, information & general works
320 - Political science
330 - Economics
576 - Genetics & evolution
658 - General management
140 - Specific philosophical schools
1
297 - Islam, Babism & Bahai Faith
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
630 - Agriculture & related technologies
1