Classification
551 - Geology, hydrology & meteorology
610 - Medicine & health
363 - Other social problems & services
70
700 - The arts; fine & decorative arts
62
333 - Economics of land & energy
61
000 - Computer science, information & general works
54
330 - Economics
44
600 - Technology
38
140 - Specific philosophical schools
30
320 - Political science
29
580 - Plants (Botany)
27
380 - Commerce, communications & transportation
25
630 - Agriculture & related technologies
24
620 - Engineering & allied operations
23
581 - Specific topics in natural history
22
900 - History & geography
19
370 - Education
15
500 - Natural sciences & mathematics
10
576 - Genetics & evolution
10
658 - General management
10
304 - Factors affecting social behavior
8
720 - Architecture
8
800 - Literature & rhetoric
8
414 - Phonology & phonetics
7
540 - Chemistry & allied sciences
7
300 - Social sciences
5
340 - Law
4
612 - Human physiology
4
170 - Ethics
3
200 - Religion
3
360 - Social problems & services; associations
3
400 - Language
3
100 - Philosophy & psychology
2
120 - Epistemology, causation & humankind
2
350 - Public administration & military science
2
410 - Linguistics
2
520 - Astronomy & allied sciences
2
550 - Earth sciences
2
364 - Criminology
1
530 - Physics
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1
791 - Public performances
1