. . "The police and minority groups : a program to prevent disorder and to improve relations between different racial, religious, and national groups" . . . . . . . . . "The police and minority groups a program to prevent disorder and to improve relations between different racial, religious, and national groups" . . "The police and minority groups a program to prevent disorder and to improve relations between different racial, religious, and national groups"@en . . "The Police and minority groups : a Program to Prevent Disorder and to Improve Relations Between Different Racial, Religious, and National Groups. By J.E. Weckler and Theo E. Hall" . . . . "The police and minority groups : a programm to prevent disorder and to improve relations between different racial, religious, and national groups" . . . . . . . . . . "United States" . .