Drug control [electronic resource] : DEA could improve its heroin signature and domestic monitor programs' geographic source data / United States General Accounting Office.
Imprint
Washington, D.C. : U.S. General Accounting Office, [2002]
Drug control : DEA could improve its Heroin Signature and Domestic Monitor Programs' geographic source data ii, 33 p. : ill. ; 28 cm. (DLC) 2002410695 (OCoLC)51857110