Classification
363 - Other social problems & services
330 - Economics
326
333 - Economics of land & energy
306
600 - Technology
279
700 - The arts; fine & decorative arts
261
628 - Sanitary & municipal engineering
247
620 - Engineering & allied operations
216
000 - Computer science, information & general works
212
551 - Geology, hydrology & meteorology
172
900 - History & geography
167
320 - Political science
164
610 - Medicine & health
139
380 - Commerce, communications & transportation
127
140 - Specific philosophical schools
104
581 - Specific topics in natural history
89
630 - Agriculture & related technologies
89
658 - General management
89
580 - Plants (Botany)
82
370 - Education
52
500 - Natural sciences & mathematics
52
340 - Law
49
576 - Genetics & evolution
47
300 - Social sciences
38
720 - Architecture
34
800 - Literature & rhetoric
34
540 - Chemistry & allied sciences
28
304 - Factors affecting social behavior
18
100 - Philosophy & psychology
17
414 - Phonology & phonetics
17
301 - Sociology & anthropology
14
400 - Language
14
170 - Ethics
12
200 - Religion
11
657 - Accounting
10
361 - Social problems & social welfare in general
9
410 - Linguistics
9
344 - Labor, social, education & cultural law
8
331 - Labor economics
7
612 - Human physiology
7
297 - Islam, Babism & Bahai Faith
6
368 - Insurance
6
530 - Physics
5
350 - Public administration & military science
4
364 - Criminology
3
520 - Astronomy & allied sciences
3
550 - Earth sciences
3
770 - Photography, photographs & computer art
3
120 - Epistemology, causation & humankind
2
338 - Production
2
360 - Social problems & services; associations
2
more ...