Text ( visual ) : unmediated Understanding police agency performance / edited by Gordon P. Whitaker. -- Washington, D.C. : U.S. Dept. of Justice, National Institute of Justice , 1984. -- 182 p. : ill. ; 28 cm. -- For sale by the Supt. of Docs., U.S. G.P.O ; "Project was supported by grant number 80-IJ-CX-0040, awarded to the University of North Carolina, by the National Institute of Justice"--T.p. verso ; "February 1984" ; Includes bibliographical references. -- (BA90160063) ; https://ci.nii.ac.jp/ncid/BA90160063 Author Heading(s): Whitaker, Gordon P. ; National Institute of Justice (U.S.) ; University of North Carolina at Chapel Hill. -- Subject Heading(s): LCSH : Police -- United States ; LCSH : Police administration -- United States