Grebenik, E Hill, A <br/><br/>
International demographic terminology fertility, family planning and nuptiality 

 - Paris  UNESCO  1974 
 - xi, 53p.; 22cm. 
 - International union for the scientific study of population .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birth rate<br/>Couple fertility<br/>Population<br/>Prematurity