Dasmann R F <br/><br/>
Planet in peril? Man and biosphera today 

 - Unesco  Penguin          1972 
 - 136 p.  cm. 
<br/><br/><label>Standard No.: </label>20539 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BIOLOGY
<br/><br/><label>Dewey Class. No.: </label>G:53, L2