Surviving with the biosphere /
International Conference on Environmental Future(4th :1990 :Budapest, Hungary)
Polunin, Nicholas.
Burnett, J. H.(John Harrison),1922-2007.
Edinburgh : Edinburgh University Press,
c1993.
"Proceedings of the Fourth International Conference on Environmental Future (4th ICEF), held in Budapest, Hungary, during 22-27 April 1990."
Includes bibliographical references and indexes.
Human ecology
Environmental policy