Author
HHS Evaluation Documentation Center (U.S.)
3
National Research Council (U.S.). Transportation Research Board
2
Transit Cooperative Research Program
2
United States. Federal Highway Administration
2
Academy of Economics and Economic Education
1
Allied Academies
1
American Enterprise Institute for Public Policy Research
1
American Real Estate Society
1
Clearinghouse and Laboratory for Census Data
1
HHS Policy Information Center (U.S.)
1
Labor and Employment Relations Association
1
National Bureau of Economic Research
1
National Institute of Justice (U.S.)
1
National Institute of Neurological and Communicative Disorders and Stroke
1
National Institute of Neurological and Communicative Disorders and Stroke. Office of Scientific and Health Reports
1
National Institute on Alcohol Abuse and Alcoholism (U.S.)
1
National Institute on Disability and Rehabilitation Research (U.S.)
1
National Institute on Drug Abuse
1
National Institutes of Health (U.S.)
1
National Rehabilitation Information Center (U.S.)
1
Public Technology, inc
1
ScienceDirect (Online service)
1
Transit Development Corporation
1
Turner-Fairbank Highway Research Center
1
U.S. Atomic Energy Commission
1
United States. Department of Transportation. Office of the Secretary
1
United States. Federal Transit Administration
1
United States. Office of Special Education and Rehabilitative Services
1
United States. Urban Mass Transportation Administration
1
Urban Consortium for Technology Initiatives. Transportation Task Force
1
Worldwide Videotex
1