Author
Unesco
60
United States. National Bureau of Standards
58
National Institutes of Health (U.S.)
51
Geological Survey (U.S.)
46
United States. Environmental Protection Agency
44
United States. Department of Health, Education, and Welfare
42
United States. Forest Service
39
United States. Department of Energy
38
National Cancer Institute (U.S.)
32
United States. Office of Education
32
United States. National Aeronautics and Space Administration
28
United States. Public Health Service
25
National Heart, Lung, and Blood Institute
22
United States. Bureau of Mines
22
White House Conference on Aging
22
United States. Environmental Protection Agency. Office of Research and Development
21
National Bureau of Economic Research
20
National Science Foundation (U.S.)
20
United States. Department of Education
20
Council of State Governments
19
United States. Office of Naval Research
19
National Academy of Sciences (U.S.)
18
National Institute of Mental Health (U.S.)
18
Pennsylvania. Department of Health
18
United States. Bureau of the Census
18
United States. National Oceanic and Atmospheric Administration
18
United States. Energy Research and Development Administration
17
American Assembly
16
American Association for Higher Education
16
National Association of State Budget Officers
16
United States. Department of State
16
International Bureau of Education
15
International Conference on Public Education
15
Pennsylvania. Department of Public Instruction
15
Solar Energy Research Institute
15
United States. Food and Drug Administration
15
National Institute of Education (U.S.)
14
Pennsylvania. Department of Agriculture
14
Pennsylvania. Department of Education
14
United States. Urban Mass Transportation Administration
14
Industrial Environmental Research Laboratory (Research Triangle Park, N.C.)
13
National Center for Health Statistics (U.S.)
13
National Institute of Child Health and Human Development (U.S.)
13
National Research Council (U.S.)
13
Pennsylvania. Governor's White House Conference Committee on Aging
13
President's Conference on Home Building and Home Ownership Washington, D.C.
13
United States. Department of Agriculture
13
United States. Federal Highway Administration
13
Association of the Bar of the City of New York
12
Educational Testing Service
12
more ...