Parsons, Jack. <br/><br/>
Population versus liberty / 
by Jack Parsons. 
 - Pemberton Books :  London,  1971. 
 - xxx, 417 p. :  ill. ;  23 cm. 
<br/><br/>Bibliography : p. 380-392. 
<br/><br/><label>ISBN: </label>0301710511 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population.<br/>Birth control.<br/>Liberty.