Classification
004 - Data processing & computer science
1
150 - Psychology
3
200 - Religion
4
201 - Religious mythology & social theology
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
305 - Social groups
2
306 - Culture & institutions
9
320 - Political science
3
327 - International relations
1
330 - Economics
2
338 - Production
2
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
364 - Criminology
1
370 - Education
18
371 - Schools & their activities; special education
2
407 - Education, research & related topics
5
511 - General principles of mathematics
1
512 - Algebra
1
530 - Physics
3
551 - Geology, hydrology & meteorology
1
570 - Life sciences; biology
2
571 - Physiology & related subjects
1
610 - Medicine & health
2
616 - Diseases
1
618 - Gynecology, obstetrics, pediatrics & geriatrics
1
650 - Management & auxiliary services
2
791 - Public performances
1