United Nations. Department of Economic and Social Affairs. <br/><br/>
Levels and trends of fertility throughout the world , 1950-1970 

 - New York  United Nations  1977 
 - xiii,361p.; 25cm.- 
 - Population studies; no.59 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertility, Human<br/>Fertility<br/>Human Fertility<br/>Differential Fertility<br/>Fertility-Sources of Data
<br/><br/><label>Dewey Class. No.: </label>DB  / 301.32109046 UNI