Classification
600 - Technology
000 - Computer science, information & general works
167
620 - Engineering & allied operations
146
630 - Agriculture & related technologies
137
610 - Medicine & health
79
580 - Plants (Botany)
78
700 - The arts; fine & decorative arts
68
333 - Economics of land & energy
62
363 - Other social problems & services
52
330 - Economics
41
581 - Specific topics in natural history
29
551 - Geology, hydrology & meteorology
27
380 - Commerce, communications & transportation
23
140 - Specific philosophical schools
21
500 - Natural sciences & mathematics
20
576 - Genetics & evolution
20
540 - Chemistry & allied sciences
13
414 - Phonology & phonetics
12
320 - Political science
10
720 - Architecture
9
612 - Human physiology
8
900 - History & geography
8
304 - Factors affecting social behavior
7
658 - General management
7
361 - Social problems & social welfare in general
6
530 - Physics
5
100 - Philosophy & psychology
4
170 - Ethics
4
370 - Education
4
300 - Social sciences
3
340 - Law
3
590 - Animals (Zoology)
3
400 - Language
2
410 - Linguistics
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
200 - Religion
1
336 - Public finance
1
520 - Astronomy & allied sciences
1