Classification
610 - Medicine & health
162
700 - The arts; fine & decorative arts
81
000 - Computer science, information & general works
80
333 - Economics of land & energy
51
140 - Specific philosophical schools
44
600 - Technology
44
380 - Commerce, communications & transportation
31
580 - Plants (Botany)
31
540 - Chemistry & allied sciences
25
330 - Economics
22
620 - Engineering & allied operations
20
363 - Other social problems & services
16
612 - Human physiology
13
304 - Factors affecting social behavior
10
900 - History & geography
10
615 - Pharmacology & therapeutics
9
414 - Phonology & phonetics
8
570 - Life sciences; biology
7
576 - Genetics & evolution
7
370 - Education
6
630 - Agriculture & related technologies
6
500 - Natural sciences & mathematics
5
664 - Food technology
5
530 - Physics
4
660 - Chemical engineering
4
547 - Organic chemistry
3
800 - Literature & rhetoric
3
100 - Philosophy & psychology
2
551 - Geology, hydrology & meteorology
2
681 - Precision instruments & other devices
2
720 - Architecture
2
300 - Social sciences
1
518 - Numerical analysis
1
546 - Inorganic chemistry
1
590 - Animals (Zoology)
1
613 - Personal health & safety
1
616 - Diseases
1
628 - Sanitary & municipal engineering
1
657 - Accounting
1
658 - General management
1
661 - Industrial chemicals
1
662 - Explosives, fuels & related products
1
668 - Technology of other organic products
1