The state of the environment (1972-1992) : saving our planet : challenges and hopes. - United Nations Environment Programme (Nairobi : United Nations Environment Programme, 1992)
"UNEP/GCSS.111/2"--Cover.
"ISSN 0252-3310"--P. following t.p. verso.
Includes bibliographical references (p. 181-200).
Keywords: United Nations Environment Programme; Environmental policy; Environmental management