Geological Survey (U.S.) 284 United States. Bureau of the Census. Data User Services Division 62 Geological Survey (U.S.), 43 National Center for Health Statistics (U.S.) 32 National Center for Education Statistics 30 United States. Bureau of the Census 27 U.S. Census Bureau 16 United States. Environmental Protection Agency 14 National Institute of Standards and Technology (U.S.) 13 SpringerLink (Online service) 12 United States. Bureau of Land Management. Eastern States Office 11 United States. Government Printing Office 11 Colorado. Health Statistics Section 10 Goddard Space Flight Center 10 United States. Bureau of the Census. Administrative and Customer Services Division 10 United States. Office of Educational Research and Improvement 10 Educational Resources Information Center (U.S.) 9 Mast, Richard F. 1931- 9 United States. Bureau of Economic Analysis 9 United States. Bureau of the Census. Geography Division 9 National Climatic Data Center (U.S.) 8 National Renewable Energy Laboratory (U.S.), 8 ScienceDirect (Online service) 8 U.S. Citizenship and Immigration Services 8 United States. Bureau of Land Management 8 United States. National Technical Information Service 8 United States. Office of Juvenile Justice and Delinquency Prevention, 8 National Center for Juvenile Justice, 7 United States. Bureau of Justice Statistics 7 United States. Bureau of Mines 7 United States. Department of Health and Human Services 7 United States. Department of Health and Human Services. Office of Inspector General, 7 United States. Government Publishing Office, 7 Centers for Disease Control and Prevention (U.S.) 6 United States. National Oceanic and Atmospheric Administration 6 Abston, C. C. 5 Ambroziak, Russell A. 5 Dover, James H. 5 Du Bray, E. A. 5 Earth Science Information Center (U.S.) 5 Federal Depository Library Program, 5 Institute of Education Sciences (U.S.) 5 National Cancer Institute (U.S.) 5 National Renewable Energy Laboratory (U.S.) 5 Tabor, R. W. 5 U.S. Census Bureau, 5 U.S. Fish and Wildlife Service 5 United States. Bureau of Economic Analysis. Regional Economic Measurement Division 5 United States. Economics and Statistics Administration 5 Alexander, Richard B. 4 Causey, J. Douglas 4 Centers for Disease Control and Prevention (U.S.), 4 Geological Survey (U.S.). National Mapping Division 4 Klimasauskas, Ed 4 National Center for Chronic Disease Prevention and Health Promotion (U.S.). Behavioral Surveillance Branch 4 National Center for Education Statistics, 4 National Institute for Occupational Safety and Health 4 National Institute of Education (U.S.) 4 National Institute of Justice (U.S.) 4 Pilcher, Steven H. 4 Tuenge, Debra 4 United States. Bureau of Justice Statistics, 4 United States. Department of Energy. Office of Scientific and Technical Information 4 United States. Department of Energy. Office of Scientific and Technical Information, 4 United States. Environmental Protection Agency, 4 United States. Environmental Protection Agency. Office of Water 4 United States. General Services Administration, 4 United States. Government Accountability Office 4 United States. National Aeronautics and Space Administration 4 Wentworth, Carl M. 4 Wilson, Frederic H., 1950- 4 Air and Energy Engineering Research Laboratory 3 Berg, Henry C. 3 Buttleman, Kim 3 Coastal and Marine Geology Program (Geological Survey) 3 Coastal and Marine Geology Program (Geological Survey). Woods Hole Field Center 3 Colorado Geological Survey 3 Colorado. Division of Water Resources 3 Duval, Joseph S. 3 Garris, Michael D. 3 Graymer, R. W. 3 Helley, Edward J. 3 Huber, Jeff 3 Intermountain Research Station (Ogden, Utah) 3 International Conference on Very Large Data Bases 3 Kincaid, Harold L. 3 Miller, Marti L. 3 National Agricultural Library (U.S.) 3 National Cooperative Geologic Mapping Program (U.S.) 3 National Geophysical Data Center 3 National Institute on Disability and Rehabilitation Research (U.S.) 3 National Institutes of Health (U.S.) 3 National Library of Medicine (U.S.), 3 Oxford University Press 3 Rocky Mountain Research Station (Fort Collins, Colo.) 3 Soller, D. R. 3 Survey of Income and Program Participation (Program) 3 Sweeney, Ronald E. 3 USGS Science Center for Coastal and Marine Geology (Woods Hole, Mass.) 3 United States. Agency for International Development 3