01021nam a2200313 a 4500 58638 BD-RjUL 20211209080637.0 161219s1980 nyua b 001 0 eng 0023900202 (BD-RjUL)58762 DLC DLC DLC eng eng 333.720973 23 OWN 1980 Owen, Oliver S., 1920- 174265 Natural resource conservation : an ecological approach / Oliver S. Owen. 3d ed. New York : Macmillan, c1980. xi, 883 p. : ill. ; 26 cm. Includes bibliographies and index. Conservation of natural resources. 170272 Ecology. 170271 Environmental protection. 170273 Conservation of natural resources United States. 174266 Ecology United States. 174267 Environmental protection United States. 170267 ddc BK 58638 58638 0 0 ddc 0 1 NFIC RUCL RUCL Reading 1985-10-21 0 333.720973 OWN 1980 2016-12-19 00:00:00 C-1 2016-12-19 BK