The environmental future :  proceedings of the first International Conference on Environmental Future, held in Finland from 27 June to 3 July 1971 / 
edited by Nicholas Polunin 
 - London :  Macmillan,  1972 
 - xiv, 660 p. :  ill., maps. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> PND 9.25 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology--Congresses
<br/><br/><label>Dewey Class. No.: </label>614.7063