Classification
600 - Technology
620 - Engineering & allied operations
900 - History & geography
74
700 - The arts; fine & decorative arts
52
333 - Economics of land & energy
38
000 - Computer science, information & general works
19
380 - Commerce, communications & transportation
19
363 - Other social problems & services
14
610 - Medicine & health
14
580 - Plants (Botany)
12
414 - Phonology & phonetics
9
551 - Geology, hydrology & meteorology
8
576 - Genetics & evolution
8
330 - Economics
6
630 - Agriculture & related technologies
6
800 - Literature & rhetoric
6
500 - Natural sciences & mathematics
4
140 - Specific philosophical schools
3
340 - Law
3
530 - Physics
3
720 - Architecture
3
320 - Political science
2
658 - General management
2
770 - Photography, photographs & computer art
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
370 - Education
1
540 - Chemistry & allied sciences
1