Symposium on population pressures upon physical & social resources in the developing lands, Pennsylvania State Univ., Sept. 17-23, 1967 <br/><br/>
Geography and crowding World; proceedings   
Ed. by Wilbur Zelinsky, Leszek, A. Kosinski and R. Mansell Prothero 
 - New York  Oxford University Press  1970 
 - xv, 601p. Index 
<br/><br/>  
<br/><br/><label>Subjects--Index Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>309.13046  / Sy989.GC