Geisert, Harold L. <br/><br/>
Population growth and international migration / 
Harold L. Geisert 
 - Washington, D. C. :  George Washington University,  1962 
 - 57 p. :  ill. ;  20 cm. 
<br/><br/> An out-of-print edition 
<br/><br/>Bibliography : p.53-57 
<br/><br/><label>LCCN: </label>62-22190