Classification
000 - Computer science, information & general works
3
530 - Physics
576 - Genetics & evolution
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
2
600 - Technology
2
363 - Other social problems & services
1
650 - Management & auxiliary services
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1