Classification
370 - Education
24
379 - Public policy issues in education
21
306 - Culture & institutions
14
371 - Schools & their activities; special education
7
378 - Higher education
7
305 - Social groups
3
333 - Economics of land & energy
2
338 - Production
2
107 - Education, research & related topics
1
300 - Social sciences
1
303 - Social processes
1
375 - Curricula
1
547 - Organic chemistry
1
551 - Geology, hydrology & meteorology
1
950 - History of Asia; Far East
1
973 - United States
1