Kahn, James R. The Economic approach to environmental and natural resources / James R. Kahn - 2nd ed. - Fort Worth : The Dryden Press, 1998 - xix, 515 p. : ill. ; 24 cm. ISBN: 0030245117 Subjects--Topical Terms: Environmental economics.Natural resources. Subjects--Index Terms: Kinh tế Môi trường Tài nguyên thiên nhiên Dewey Class. No.: 333.7 / KAH 1998