Classification
000 - Computer science, information & general works
134
600 - Technology
100
620 - Engineering & allied operations
87
700 - The arts; fine & decorative arts
79
333 - Economics of land & energy
74
900 - History & geography
67
363 - Other social problems & services
25
380 - Commerce, communications & transportation
24
500 - Natural sciences & mathematics
19
330 - Economics
17
610 - Medicine & health
17
580 - Plants (Botany)
12
530 - Physics
11
140 - Specific philosophical schools
10
340 - Law
9
540 - Chemistry & allied sciences
8
720 - Architecture
8
576 - Genetics & evolution
7
800 - Literature & rhetoric
7
630 - Agriculture & related technologies
6
532 - Fluid mechanics; liquid mechanics
5
551 - Geology, hydrology & meteorology
5
320 - Political science
4
370 - Education
4
414 - Phonology & phonetics
4
400 - Language
3
612 - Human physiology
3
304 - Factors affecting social behavior
2
581 - Specific topics in natural history
2
658 - General management
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
550 - Earth sciences
1
621 - Applied physics
1
634 - Orchards, fruits & forestry
1
780 - Music
1