Hjalte, Krister, Environmental policy and welfare economics. / Krister Hjalte, Karl Lidgren and Ingemar Stahl ; translated by Curt Wells. - London : Cambridge University Press, 1977. - vii, 111 p. : ISBN: 0521215498 Subjects--Topical Terms: Environmental policy.--- Dewey Class. No.: 306.3 / En