Population, resources and the environment : the critical challenges. / Myers, Norman. United Nations Population Fund. Population. Natural resources. Environmental policy Germany. Economic policy. Population policy. Population policy Case studies. HB871 .P673 1991 301.32 20 UNP "Researched and drafted by Norman Myers"--Acknowledgements. Includes bibliographical references (p. 140-154) and index. New York, NY : UNFPA, c1991. c1991. 1991 Text vi, 154 p. : eng Germany.