World directory of environmental research centers / edited by William K. Wilson, Morgan D. Dowd [and] Phyllis Sholtys - 2nd ed. - New York : Oryx Press, 1974 - xi, 330 p. ; 29 cm. ISBN: 0835207013 : PND 11.00 Subjects--Topical Terms: Environmental policy--Research--Directories Dewey Class. No.: 301.3058