00495nam a2200169 a 4500 20260717092203.0 260717s1990 ii 000 0 eng d 002390111x eng 333.720973 Owen, Oliver S., 1920- Natural Resource Conservation : An Ecological Approach / Owen, Oliver S., 1920- New York : Macmillan Publishing Company, c1990. xiii, 538 p. Chiras, Daniel D. BK 48808 48808 0 0 0 0 DC BKBCL BKBCL 2009-07-14 3554.00 0 333.720973 OWE 61432 2026-07-17 09:22:03 3554.00 2026-07-17 BK