Ludwig, Jens creator United States Office of Justice Programs. National Criminal Justice Reference Service (U.S.) text dcu 2019 monographic eng 1 online resource (approximately 13 pages) Jens Ludwig. "Document Number: 253014" -- Grant transmittal document. "Date Received: June 2019" -- Grant transmittal document. "This resource is being made publically available through the Office of Justice Programs' National Criminal Justice Reference Service"--Grant transmittal document. GPO Cataloging Record Distribution Program (CRDP). 2014-MU-CX-0013 n-us--- Black market Illinois Chicago Firearms Crime Illinois Chicago Firearms J 28.2:UN 2 J 28.2:UN 2 http://purl.fdlp.gov/GPO/gpo128080 http://purl.fdlp.gov/GPO/gpo128080 PUCPR 191106 20191219085832.0 on1126541674 eng