Classification
000 - Computer science, information & general works
7
363 - Other social problems & services
6
500 - Natural sciences & mathematics
3
551 - Geology, hydrology & meteorology
3
576 - Genetics & evolution
3
610 - Medicine & health
3
700 - The arts; fine & decorative arts
3
320 - Political science
2
333 - Economics of land & energy
2
414 - Phonology & phonetics
2
800 - Literature & rhetoric
2
170 - Ethics
1
304 - Factors affecting social behavior
1
340 - Law
1
380 - Commerce, communications & transportation
1
540 - Chemistry & allied sciences
1
577 - Ecology
1
581 - Specific topics in natural history
1
590 - Animals (Zoology)
1
600 - Technology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
920 - Biography, genealogy & insignia
1