Classification
306 - Culture & institutions
8
370 - Education
6
407 - Education, research & related topics
5
200 - Religion
4
320 - Political science
3
305 - Social groups
2
338 - Production
2
570 - Life sciences; biology
2
004 - Data processing & computer science
1
201 - Religious mythology & social theology
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
327 - International relations
1
330 - Economics
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
364 - Criminology
1
371 - Schools & their activities; special education
1
511 - General principles of mathematics
1
551 - Geology, hydrology & meteorology
1
616 - Diseases
1
791 - Public performances
1