The kansas city experiment 1972-1973 (12 янв 1972 г. – 26 дек 1978 г.)
Описание:
divided the southern part pf kansas city into 15 areas , five of the "beats "were patrolled as usual,in another group the beats patrol activities and in the third they recived a novel treatment.the program was kept a secret and citizens were unaware of the difference between patrolled and unpatrolled parts of the city.Добавлено на ленту времени:
Дата:
12 янв 1972 г.
26 дек 1978 г.
~ 6 years and 11 months