Classification
330 - Economics
122
630 - Agriculture & related technologies
54
320 - Political science
50
333 - Economics of land & energy
34
363 - Other social problems & services
34
000 - Computer science, information & general works
27
700 - The arts; fine & decorative arts
25
600 - Technology
24
551 - Geology, hydrology & meteorology
21
610 - Medicine & health
20
340 - Law
19
580 - Plants (Botany)
17
620 - Engineering & allied operations
13
820 - English & Old English literatures
13
300 - Social sciences
12
140 - Specific philosophical schools
10
370 - Education
10
900 - History & geography
10
240 - Christian moral & devotional theology
9
304 - Factors affecting social behavior
9
301 - Sociology & anthropology
8
658 - General management
8
581 - Specific topics in natural history
7
361 - Social problems & social welfare in general
6
170 - Ethics
5
380 - Commerce, communications & transportation
5
576 - Genetics & evolution
5
414 - Phonology & phonetics
3
720 - Architecture
3
100 - Philosophy & psychology
2
200 - Religion
2
530 - Physics
2
540 - Chemistry & allied sciences
2
800 - Literature & rhetoric
2
810 - American literature in English
2
010 - Bibliography
1
120 - Epistemology, causation & humankind
1
250 - Christian orders & local church
1
331 - Labor economics
1
338 - Production
1
344 - Labor, social, education & cultural law
1
381 - Commerce
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
571 - Physiology & related subjects
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1
930 - History of ancient world to ca. 499
1