Classification
576 - Genetics & evolution
600 - Technology
700 - The arts; fine & decorative arts
620 - Engineering & allied operations
101
900 - History & geography
91
333 - Economics of land & energy
82
000 - Computer science, information & general works
67
380 - Commerce, communications & transportation
38
363 - Other social problems & services
37
330 - Economics
34
610 - Medicine & health
24
500 - Natural sciences & mathematics
21
580 - Plants (Botany)
20
720 - Architecture
18
140 - Specific philosophical schools
17
340 - Law
16
658 - General management
15
320 - Political science
12
800 - Literature & rhetoric
12
414 - Phonology & phonetics
11
630 - Agriculture & related technologies
11
530 - Physics
10
370 - Education
9
400 - Language
7
551 - Geology, hydrology & meteorology
7
300 - Social sciences
6
540 - Chemistry & allied sciences
6
170 - Ethics
5
581 - Specific topics in natural history
4
200 - Religion
3
301 - Sociology & anthropology
3
304 - Factors affecting social behavior
3
410 - Linguistics
3
770 - Photography, photographs & computer art
3
100 - Philosophy & psychology
2
160 - Logic
1
350 - Public administration & military science
1
398 - Folklore
1
615 - Pharmacology & therapeutics
1
650 - Management & auxiliary services
1
657 - Accounting
1
780 - Music
1
791 - Public performances
1