Kahn, James R. The economic approach to environmental and natural resources / - 2nd ed. - Fort Worth : Dryden Press, c1998. - xix, 515 pages : Illustrations ; - The Dryden Press series in economics, . Includes index. ISBN: 0030245117 Subjects--Topical Terms: Environmental economics.Natural resources. LC Class. No.: HC 79 / KAH