Surviving with the biosphere  proceedings of the Fourth International Conference on Environmental future (4th ICEF) held in Budapest, Hungary during 22-27 April, 1990 
edited by Nicholas Polunin and John Burnett. 
 - Edinburgh  Edinburgh Univ.  c1993. 
 - xxii, 572p.; 24cm. 
<br/><br/><label>ISBN: </label>074860314X. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Protection; Pollution.
<br/><br/><label>Dewey Class. No.: </label>363.7  / S94S