Subject
United States
184
Manufactures
152
Academic achievement
129
Mathematical ability Testing
99
Educational surveys
90
Health surveys
77
United States Population
70
Mathematics Study and teaching
57
Agriculture
50
Education
45
Eighth grade (Education)
45
Medical care surveys
37
Drug abuse
36
Service industries
36
Mineral industries
34
Retail trade
33
Consumers
32
Labor supply
31
Criminal statistics
30
Housing
29
Mines and mineral resources
29
High school graduates
28
Ambulatory medical care Utilization
27
Forests and forestry
27
Private schools
27
Public schools
27
United States Economic conditions
27
Women Employment
27
English language Composition and exercises
26
Physician services utilization
26
Colorado
25
Degrees, Academic
25
Income
25
Juvenile delinquency
25
Drug abuse surveys
24
Education, Higher
24
Juvenile delinquents
24
Hospital utilization
23
Victims of crimes
23
Agriculture Economic aspects
22
Colorado Population
22
Juvenile courts
22
Teachers
22
Mortality
21
Student aid
20
Wages
19
College attendance
18
Household surveys
18
Public health
18
Timber
18
more ...