Weeks, John Robert.
Population: an introduction to concepts and issues /
John R. Weeks 
. - Updated 5th edition 
. - Belmont : Wadsworth Publishing Company,  1994 
. - xxi, 583 p.  ill.  24 cm. 
<br/>К.: Бібліогр. : с. 530-568, Покажчик 
<br/><label>  ISBN: </label>0-534-21120-8