Piel, Gerard. <br/><br/>
Only one world :  our own to make and to keep / 
Gerard Piel. 
 - New York :  W. H. Freeman,  c1992. 
 - xii, 367 p. : 
<br/><br/><label>ISBN: </label>0716723166 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology.
<br/><br/><label>Dewey Class. No.: </label>363.7  / On