Carvajal Manuel J Ed. <br/><br/>
Population growth and human productivity   A symposium. 

 -  1976 
<br/><br/><label>Standard No.: </label>72988 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Y:5p1,N74, L6