Classification
551 - Geology, hydrology & meteorology
700 - The arts; fine & decorative arts
363 - Other social problems & services
128
000 - Computer science, information & general works
120
333 - Economics of land & energy
114
330 - Economics
82
600 - Technology
79
320 - Political science
67
610 - Medicine & health
61
900 - History & geography
61
620 - Engineering & allied operations
59
380 - Commerce, communications & transportation
53
140 - Specific philosophical schools
48
580 - Plants (Botany)
45
581 - Specific topics in natural history
44
630 - Agriculture & related technologies
38
500 - Natural sciences & mathematics
23
576 - Genetics & evolution
23
370 - Education
21
414 - Phonology & phonetics
18
720 - Architecture
16
340 - Law
15
658 - General management
15
530 - Physics
12
800 - Literature & rhetoric
12
304 - Factors affecting social behavior
9
540 - Chemistry & allied sciences
9
170 - Ethics
7
300 - Social sciences
7
550 - Earth sciences
6
612 - Human physiology
6
100 - Philosophy & psychology
5
400 - Language
4
200 - Religion
3
297 - Islam, Babism & Bahai Faith
2
360 - Social problems & services; associations
2
361 - Social problems & social welfare in general
2
410 - Linguistics
2
770 - Photography, photographs & computer art
2
120 - Epistemology, causation & humankind
1
301 - Sociology & anthropology
1
520 - Astronomy & allied sciences
1
657 - Accounting
1
791 - Public performances
1