Krech III, Shepard, McNeill, J. R. and Merchant, Carolyn Encyclopedia of world environmental history : O-Z - New York Routledge and Kegan Paul 2004 - 951-1428p. V.3 ISBN: 0415937353 £240 Subjects--Topical Terms: EncyclopediaEnvironment-encyclopaedia Dewey Class. No.: 333.703 / KRE