Bongaarts, John  <br/><br/>
The proximate determinants of natural marital fertility / 
John Bongaarts 
 - New York :  Population Council (PC) ,  1982 
 - 44p.  :  ill. ;  22 cm.  
 - Working papers (Population Council. Center for Policy Studies)  No. 89 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertility, Human<br/>Birth intervals
<br/><br/><label>Gov. Doc. Class. No.: </label>US PC CPS WP-89