Harvey, Joan M.. <br/><br/>
Sources of Statistics /  
by Joan M Harvey. 
 - 2nd ed /  
 - London :   Clive Bingley Ltd. ,   1981 
 - p126 :  
<br/><br/><label>ISBN: </label>0-85157-115-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Libray Statistics
<br/><br/><label>Dewey Class. No.: </label>2:(B28)