Polunin Nicholas Ed. <br/><br/>
Proceeding on the environmental future 
Polunin Nicholas Ed. 
 -  1972 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>55596 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Public health<br/>Medicine
<br/><br/><label>Dewey Class. No.: </label>L:5p1:N71, L2