Classification
900 - History & geography
117
000 - Computer science, information & general works
68
700 - The arts; fine & decorative arts
50
330 - Economics
36
025 - Library operations
35
140 - Specific philosophical schools
25
320 - Political science
21
658 - General management
20
020 - Library & information sciences
19
800 - Literature & rhetoric
16
600 - Technology
13
340 - Law
12
363 - Other social problems & services
11
500 - Natural sciences & mathematics
11
300 - Social sciences
10
333 - Economics of land & energy
10
380 - Commerce, communications & transportation
10
610 - Medicine & health
10
720 - Architecture
10
100 - Philosophy & psychology
9
400 - Language
9
620 - Engineering & allied operations
9
027 - General libraries
8
576 - Genetics & evolution
8
770 - Photography, photographs & computer art
8
200 - Religion
7
370 - Education
7
410 - Linguistics
6
580 - Plants (Botany)
6
581 - Specific topics in natural history
6
780 - Music
6
026 - Libraries for specific subjects
5
170 - Ethics
4
301 - Sociology & anthropology
4
302 - Social interaction
4
304 - Factors affecting social behavior
4
384 - Communications; telecommunication
4
551 - Geology, hydrology & meteorology
4
791 - Public performances
4
016 - Bibliographies of works on specific subjects
3
070 - News media, journalism & publishing
3
338 - Production
3
651 - Office services
3
670 - Manufacturing
3
006 - Special computer methods
2
296 - Judaism
2
297 - Islam, Babism & Bahai Faith
2
331 - Labor economics
2
398 - Folklore
2
414 - Phonology & phonetics
2
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