the use of call grading :  how calls to the police are graded and resourced. 

 - london:   1995.  
 - paperback  
<br/><br/> 46pp., 25x19 
<br/><br/><label>ISBN: </label>1 85893 384 6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Police