Eco caastrophe 

 - San Francisco    Canfield Press          1970 
 - xiii,158p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography-Modern
<br/><br/><label>Dewey Class. No.: </label>U:(G:5), L0