Pollard, A.H <br/><br/>
Demographic techniques 

 - Sydney  Pergamon Press  1974 
 - ix,185p. 
<br/><br/><label>ISBN: </label>0-08-040065 5 
<br/><br/><label>Subjects--Index Terms: </label>Demographic technique 
<br/><br/><label>Dewey Class. No.: </label>312  / POL