Rajaa
Hakutulokset: Hakutulos
Rajaa
yksi hakutulos.
Informants, Cooperating Witnesses, and Undercover Investigations
sidottu,
2014,
englanti,
ISBN 9781466554580
The use of informants has been described as the "black hole of law enforcement." Failures in the training of police officers and federal agents in the recruitment and operation of …