Northrop, David M. creator author. MacCrehan, William A. author. National Institute of Justice (U.S.) issuing body. National Institute of Standards and Technology (U.S.) Office of Law Enforcement Standards, issuing body. Law Enforcement and Corrections Standards and Testing Program (U.S.) text bibliography dcu 1997 monographic eng 1 online resource (vii, 15 pages) : illustrations. David M. Northrop and William A. MacCrehan. "Law Enforcement and Corrections Standards and Testing Program"--Cover. "Prepared with the assistance of the Office of Law Enforcement Standards (OLES) of the National Institute of Standards and Technology (NIST)"--PDF title page verso. "NIST award 60NANB-9D0926 and NIJ interagency agreement LEAA-J-IAA-021-3, project no. 9001"--PDF title page verso. "February 1997." CRDP Program record. Includes bibliographical references (page 15). n-us--- Law enforcement Equipment and supplies Research United States Gunpowder, Smokeless Testing Capillary electrophoresis Testing J 28.15/2:600-91 J 28.15/2:600-91 Northrop, David M. Washington, DC : U.S. Dept. of Justice, Office of Justice Programs, National Institute of Justice, [1997] (OCoLC)36542089 https://purl.fdlp.gov/GPO/gpo83689 https://purl.fdlp.gov/GPO/gpo83689 PUCPR 111123 20180417222809.0 ocn762320046 eng