Classification
330 - Economics
333 - Economics of land & energy
2
363 - Other social problems & services
370 - Education
380 - Commerce, communications & transportation
576 - Genetics & evolution
581 - Specific topics in natural history
2
600 - Technology
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
551 - Geology, hydrology & meteorology
1
630 - Agriculture & related technologies
1
657 - Accounting
1
700 - The arts; fine & decorative arts
1