The World environment, 1972-1992 : two decades of challenge / edited by Mostafa K. Tolba and Osama A. El-Kholy, in association with E. El-Hinnawi [et al.].
საგამომცემლო ცნობები
London ; Glasgow ; New York [etc.] : Published by Chapman & Hall on behalf of the United Nations Environment Programme, 1992.