Classification
610 - Medicine & health
112
000 - Computer science, information & general works
82
700 - The arts; fine & decorative arts
67
580 - Plants (Botany)
58
333 - Economics of land & energy
45
140 - Specific philosophical schools
44
540 - Chemistry & allied sciences
36
363 - Other social problems & services
29
570 - Life sciences; biology
29
600 - Technology
29
576 - Genetics & evolution
28
380 - Commerce, communications & transportation
26
615 - Pharmacology & therapeutics
20
581 - Specific topics in natural history
19
620 - Engineering & allied operations
16
572 - Biochemistry
15
612 - Human physiology
15
414 - Phonology & phonetics
12
304 - Factors affecting social behavior
8
500 - Natural sciences & mathematics
8
551 - Geology, hydrology & meteorology
7
900 - History & geography
7
630 - Agriculture & related technologies
5
330 - Economics
4
340 - Law
4
300 - Social sciences
3
616 - Diseases
3
720 - Architecture
3
370 - Education
2
543 - Analytical chemistry
2
571 - Physiology & related subjects
2
579 - Microorganisms, fungi & algae
2
599 - Mammals
2
611 - Human anatomy, cytology & histology
2
614 - Incidence & prevention of disease
2
658 - General management
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
170 - Ethics
1
301 - Sociology & anthropology
1
361 - Social problems & social welfare in general
1
400 - Language
1
530 - Physics
1
547 - Organic chemistry
1
629 - Other branches of engineering
1
632 - Plant injuries, diseases & pests
1
636 - Animal husbandry
1
641 - Food & drink
1
660 - Chemical engineering
1
664 - Food technology
1
more ...