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