Classification
576 - Genetics & evolution
610 - Medicine & health
380 - Commerce, communications & transportation
8
363 - Other social problems & services
5
700 - The arts; fine & decorative arts
5
000 - Computer science, information & general works
4
580 - Plants (Botany)
4
620 - Engineering & allied operations
4
658 - General management
3
140 - Specific philosophical schools
2
340 - Law
2
370 - Education
2
600 - Technology
2
900 - History & geography
2
304 - Factors affecting social behavior
1
320 - Political science
1
330 - Economics
1
333 - Economics of land & energy
1
361 - Social problems & social welfare in general
1
551 - Geology, hydrology & meteorology
1
570 - Life sciences; biology
1
581 - Specific topics in natural history
1