Levels and trends of contraceptive use as assessed in 1988. 

 - New York :  United Nations,  1989. 
 - 129 p. :  ill. ;  28 cm. 
 - Population studies ;  no. 110 .
<br/><br/> At head of title: Department of International Economic and Social Affairs. 
<br/><br/><label>ISBN: </label>9211511763 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birth control--Statistics.<br/>Contraception--Statistics.