National Institute of Law Enforcement and Criminal Justice National Criminal Justice Reference Service (U.S.) 34 Abt Associates 23 Kravitz, Marjorie 22 National Symposium on Law Enforcement Science and Technology Washington, D.C. 20 Aspen Systems Corporation 17 National Institute of Justice (U.S.) 15 United States Law Enforcement Assistance Administration 15 Battelle Law and Justice Study Center 13 University of Maryland, College Park Institute of Criminal Justice and Criminology 12 Boston, Guy D 8 Blew, Carol Holliday 7 Gay, William G 7 Ku, Richard 7 Waller, John D 7 American Justice Institute 6 Gottfredson, Don M 6 Institute for Law and Social Research (Washington, D.C.) 6 Murray, Charles A 6 Newman, Oscar 6 Rutherford, Andrew, 1940- 6 Schell, Theodore H 6 American Institutes for Research 5 Fowler, Floyd J 5 Johnson, Carolyn, 1948- 5 Joint Committee on New York Drug Law Evaluation 5 Krug, Robert E 5 Mangione, Thomas W 5 Mangione, Thomas W. 5 Massey, Robert G 5 see all ...