Classification
700 - The arts; fine & decorative arts
703
600 - Technology
615
900 - History & geography
590
000 - Computer science, information & general works
569
620 - Engineering & allied operations
467
333 - Economics of land & energy
454
330 - Economics
409
610 - Medicine & health
318
658 - General management
292
380 - Commerce, communications & transportation
255
363 - Other social problems & services
232
500 - Natural sciences & mathematics
205
650 - Management & auxiliary services
178
140 - Specific philosophical schools
155
580 - Plants (Botany)
146
320 - Political science
140
576 - Genetics & evolution
133
530 - Physics
123
340 - Law
94
551 - Geology, hydrology & meteorology
91
100 - Philosophy & psychology
79
005 - Computer programming, programs & data
75
800 - Literature & rhetoric
74
520 - Astronomy & allied sciences
66
300 - Social sciences
60
630 - Agriculture & related technologies
60
720 - Architecture
60
540 - Chemistry & allied sciences
59
370 - Education
57
414 - Phonology & phonetics
55
519 - Probabilities & applied mathematics
51
331 - Labor economics
48
400 - Language
48
820 - English & Old English literatures
45
004 - Data processing & computer science
35
200 - Religion
34
410 - Linguistics
34
006 - Special computer methods
32
115 - Time
31
780 - Music
29
581 - Specific topics in natural history
28
304 - Factors affecting social behavior
26
158 - Applied psychology
25
302 - Social interaction
25
170 - Ethics
24
384 - Communications; telecommunication
23
621 - Applied physics
18
361 - Social problems & social welfare in general
16
670 - Manufacturing
16
338 - Production
15
more ...