Classification
610 - Medicine & health
99
700 - The arts; fine & decorative arts
40
333 - Economics of land & energy
30
000 - Computer science, information & general works
24
140 - Specific philosophical schools
23
580 - Plants (Botany)
19
600 - Technology
17
380 - Commerce, communications & transportation
14
620 - Engineering & allied operations
12
540 - Chemistry & allied sciences
10
330 - Economics
8
363 - Other social problems & services
8
615 - Pharmacology & therapeutics
7
900 - History & geography
7
612 - Human physiology
5
304 - Factors affecting social behavior
4
340 - Law
4
414 - Phonology & phonetics
4
576 - Genetics & evolution
4
590 - Animals (Zoology)
4
320 - Political science
3
370 - Education
3
630 - Agriculture & related technologies
3
800 - Literature & rhetoric
3
400 - Language
2
570 - Life sciences; biology
2
574 - [Unassigned]
2
599 - Mammals
2
616 - Diseases
2
100 - Philosophy & psychology
1
336 - Public finance
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
543 - Analytical chemistry
1
581 - Specific topics in natural history
1
611 - Human anatomy, cytology & histology
1
641 - Food & drink
1
658 - General management
1
720 - Architecture
1
820 - English & Old English literatures
1
830 - Literatures of Germanic languages
1
943 - Central Europe; Germany
1