RT Book T1 Some effects of an increase in police manpower in the 20th precinct of New York City: this study was sponsored by the City of New York and by the New York City-Rand Institute A1 Press, S. James 1931- LA English PP New York PB New York City Rand Institute YR 1971 UL https://krimdok.uni-tuebingen.de/Record/1098164474