Man's impact on the global environment :  assessment and recommendations for action.  

 - Cambridge (Mass.)  M.I.T.P.  1970.  
 - [1 v.] 
<br/><br/> Sponsored by the Massachusett.  
<br/><br/><label>ISBN: </label>0262190869 0262690276 9780262190862 9780262690270 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--Congresses.<br/>Man--Influence on nature--Congresses.
<br/><br/><label>LC Class. No.: </label>QH541