Classification
610 - Medicine & health
26
140 - Specific philosophical schools
19
700 - The arts; fine & decorative arts
15
000 - Computer science, information & general works
14
600 - Technology
13
333 - Economics of land & energy
10
580 - Plants (Botany)
9
547 - Organic chemistry
8
576 - Genetics & evolution
5
540 - Chemistry & allied sciences
4
615 - Pharmacology & therapeutics
4
660 - Chemical engineering
4
800 - Literature & rhetoric
4
330 - Economics
3
370 - Education
3
380 - Commerce, communications & transportation
3
414 - Phonology & phonetics
3
572 - Biochemistry
3
574 - [Unassigned]
3
616 - Diseases
3
363 - Other social problems & services
2
612 - Human physiology
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
661 - Industrial chemicals
2
304 - Factors affecting social behavior
1
410 - Linguistics
1
530 - Physics
1
541 - Physical chemistry
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
664 - Food technology
1
668 - Technology of other organic products
1
770 - Photography, photographs & computer art
1