Classification
363 - Other social problems & services
600 - Technology
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
620 - Engineering & allied operations
50
610 - Medicine & health
20
000 - Computer science, information & general works
19
330 - Economics
18
333 - Economics of land & energy
18
580 - Plants (Botany)
16
551 - Geology, hydrology & meteorology
13
414 - Phonology & phonetics
12
900 - History & geography
12
581 - Specific topics in natural history
9
300 - Social sciences
8
380 - Commerce, communications & transportation
8
140 - Specific philosophical schools
7
320 - Political science
7
540 - Chemistry & allied sciences
6
720 - Architecture
6
100 - Philosophy & psychology
4
170 - Ethics
4
340 - Law
4
612 - Human physiology
4
500 - Natural sciences & mathematics
3
576 - Genetics & evolution
3
301 - Sociology & anthropology
2
350 - Public administration & military science
2
370 - Education
2
658 - General management
2
800 - Literature & rhetoric
2
200 - Religion
1
530 - Physics
1
770 - Photography, photographs & computer art
1