Introduction to environmental science / Joseph M. Moran, Michael D. Morgan, James H. Wiersma. Moran, Joseph M. Morgan, Michael D. Wiersma, James H. Human ecology. Environmental sciences. Environmental policy. GF41 .M67 1986 333.7 19 MOI Includes bibliographies and index. New York : W.H. Freeman, c1986. c1986. 1986 Text xii, 709 p. : eng