Allen, R. J. <br/><br/>
Effective Supervision in the Police Service 

 - London  McGraw-Hill Book Company (UK) Limited  1978 
 - 115p. 
<br/><br/><label>ISBN: </label>0-07-084504-2 
<br/><br/><label>Dewey Class. No.: </label>362.2  / ALL/E