Classification
612 - Human physiology
610 - Medicine & health
274
500 - Natural sciences & mathematics
131
700 - The arts; fine & decorative arts
107
580 - Plants (Botany)
75
000 - Computer science, information & general works
70
618 - Gynecology, obstetrics, pediatrics & geriatrics
70
333 - Economics of land & energy
64
571 - Physiology & related subjects
61
140 - Specific philosophical schools
52
363 - Other social problems & services
47
600 - Technology
47
380 - Commerce, communications & transportation
44
100 - Philosophy & psychology
35
540 - Chemistry & allied sciences
27
581 - Specific topics in natural history
23
620 - Engineering & allied operations
23
576 - Genetics & evolution
21
630 - Agriculture & related technologies
21
900 - History & geography
18
414 - Phonology & phonetics
14
551 - Geology, hydrology & meteorology
14
330 - Economics
13
615 - Pharmacology & therapeutics
13
370 - Education
10
331 - Labor economics
9
361 - Social problems & social welfare in general
8
152 - Perception, movement, emotions & drives
5
570 - Life sciences; biology
5
616 - Diseases
5
300 - Social sciences
4
780 - Music
4
153 - Mental processes & intelligence
3
170 - Ethics
3
302 - Social interaction
3
530 - Physics
3
613 - Personal health & safety
3
720 - Architecture
3
800 - Literature & rhetoric
3
011 - Bibliographies
2
304 - Factors affecting social behavior
2
340 - Law
2
510 - Mathematics
2
791 - Public performances
2
155 - Differential & developmental psychology
1
160 - Logic
1
301 - Sociology & anthropology
1
305 - Social groups
1
320 - Political science
1
350 - Public administration & military science
1
more ...