. "Improving witness cooperation : summary report of the District of Columbia witness survey and a handbook for witness management"@en . . . . . . . . . . . . . . "Improving witness cooperation summary report of the District of Columbia witness survey and a handbook for witness management"@en . . . . . . . . . . "Improving witness cooperation : summary report of the District of Columbia witness survey and a handbook for witness management" . "Witnesses Washington (D.C.)" . . . . "National Institute of Law Enforcement and Criminal Justice." . . "United States." . . "Witnesses United States." . . "Washington (D.C.)" . . "Institute for Law and Social Research (Washington, D.C.)" . . "Witnesses." . .