Classification
380 - Commerce, communications & transportation
330 - Economics
22
000 - Computer science, information & general works
14
300 - Social sciences
14
320 - Political science
14
333 - Economics of land & energy
12
700 - The arts; fine & decorative arts
12
301 - Sociology & anthropology
11
600 - Technology
11
900 - History & geography
11
340 - Law
8
384 - Communications; telecommunication
8
140 - Specific philosophical schools
5
302 - Social interaction
5
658 - General management
5
580 - Plants (Botany)
4
610 - Medicine & health
4
410 - Linguistics
3
620 - Engineering & allied operations
3
400 - Language
2
500 - Natural sciences & mathematics
2
670 - Manufacturing
2
004 - Data processing & computer science
1
006 - Special computer methods
1
100 - Philosophy & psychology
1
150 - Psychology
1
153 - Mental processes & intelligence
1
170 - Ethics
1
200 - Religion
1
331 - Labor economics
1
363 - Other social problems & services
1
370 - Education
1
381 - Commerce
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
612 - Human physiology
1
651 - Office services
1