TY  - GEN
AU  - Samuel Walker
AU  - Charles M. Katz
TI  - The Police in America: An Introduction 
SN  - 0072873256
U1  - 363.20973 22
PY  - 2005///
CY  - New York
PB  - McGraw-Hill
KW  - Police Service-USA
N1  - Sociology
ER  -