Classification
004 - Data processing & computer science
1
005 - Computer programming, programs & data
1
006 - Special computer methods
1
070 - News media, journalism & publishing
1
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
2
150 - Psychology
26
155 - Differential & developmental psychology
4
158 - Applied psychology
1
160 - Logic
2
174 - Occupational ethics
1
301 - Sociology & anthropology
5
302 - Social interaction
3
306 - Culture & institutions
5
320 - Political science
4
330 - Economics
9
338 - Production
2
340 - Law
4
342 - Constitutional & administrative law
1
344 - Labor, social, education & cultural law
24
353 - Specific fields of public administration
4
361 - Social problems & social welfare in general
6
362 - Social welfare problems & services
2
363 - Other social problems & services
1
364 - Criminology
1
370 - Education
5
378 - Higher education
1
410 - Linguistics
1
500 - Natural sciences & mathematics
2
501 - Philosophy & theory
1
502 - Miscellany
1
509 - Historical, geographic & persons treatment
1
512 - Algebra
1
515 - Analysis
6
519 - Probabilities & applied mathematics
3
520 - Astronomy & allied sciences
2
530 - Physics
5
531 - Classical mechanics; solid mechanics
1
540 - Chemistry & allied sciences
14
541 - Physical chemistry
3
543 - Analytical chemistry
4
547 - Organic chemistry
5
549 - Mineralogy
1
551 - Geology, hydrology & meteorology
1
570 - Life sciences; biology
32
571 - Physiology & related subjects
8
572 - Biochemistry
7
576 - Genetics & evolution
3
577 - Ecology
2
578 - Natural history of organisms
1
more ...