Classification
000 - Computer science, information & general works
38
006 - Special computer methods
1
111 - Ontology
1
140 - Specific philosophical schools
8
300 - Social sciences
12
301 - Sociology & anthropology
5
304 - Factors affecting social behavior
16
305 - Social groups
2
320 - Political science
150
327 - International relations
1
330 - Economics
205
333 - Economics of land & energy
127
336 - Public finance
1
338 - Production
8
340 - Law
42
342 - Constitutional & administrative law
2
344 - Labor, social, education & cultural law
12
346 - Private law
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
60
370 - Education
5
371 - Schools & their activities; special education
2
380 - Commerce, communications & transportation
12
400 - Language
2
414 - Phonology & phonetics
2
500 - Natural sciences & mathematics
6
509 - Historical, geographic & persons treatment
1
519 - Probabilities & applied mathematics
3
520 - Astronomy & allied sciences
1
530 - Physics
2
539 - Modern physics
2
540 - Chemistry & allied sciences
4
541 - Physical chemistry
1
543 - Analytical chemistry
1
546 - Inorganic chemistry
1
547 - Organic chemistry
1
549 - Mineralogy
2
550 - Earth sciences
13
551 - Geology, hydrology & meteorology
39
560 - Paleontology; paleozoology
1
570 - Life sciences; biology
9
571 - Physiology & related subjects
58
572 - Biochemistry
18
576 - Genetics & evolution
7
577 - Ecology
433
578 - Natural history of organisms
7
579 - Microorganisms, fungi & algae
26
580 - Plants (Botany)
171
581 - Specific topics in natural history
62
more ...