The economics of natural resource use / John M. Hartwick, Nancy D. Olewiler. Hartwick, John M. Olewiler, Nancy D. Natural resources. Environmental policy. HC59 .H3558 1998 333.713 21 HAE Includes bibliographical references and index. London : Harper & Row, c1986. c1986. 1998 Text xv, 432 p. : eng Addison-Wesley series in economics