Carvajal, Manuel J. <br/><br/>
Population growth and human productivity 
edited by Manuel J. Carvajal 
 - Cainesville  University of Florida  1976 
 - 294p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population
<br/><br/><label>Dewey Class. No.: </label>B12 C253