Classification
600 - Technology
620 - Engineering & allied operations
32
580 - Plants (Botany)
21
363 - Other social problems & services
19
610 - Medicine & health
18
630 - Agriculture & related technologies
16
700 - The arts; fine & decorative arts
16
900 - History & geography
16
333 - Economics of land & energy
14
000 - Computer science, information & general works
13
140 - Specific philosophical schools
8
330 - Economics
8
581 - Specific topics in natural history
6
576 - Genetics & evolution
5
720 - Architecture
5
300 - Social sciences
3
304 - Factors affecting social behavior
3
340 - Law
3
380 - Commerce, communications & transportation
3
414 - Phonology & phonetics
3
540 - Chemistry & allied sciences
3
658 - General management
3
800 - Literature & rhetoric
3
170 - Ethics
2
320 - Political science
2
410 - Linguistics
2
590 - Animals (Zoology)
2
100 - Philosophy & psychology
1
361 - Social problems & social welfare in general
1
500 - Natural sciences & mathematics
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1