00000cam a22000004a 4500 UP-99796217609008809 Buklod 20090923131918.0 a r |||| u| ta 090923s1992 xx d r |||| u| 0697112292 (iLib)UPD-00107903338 DSCI S938 C37 1992 Castillon, David A. Conservation of natural resources a resource management approach David A. Castillon. Dubuque, Iowa Wm. C. Brown Publishers c1992. xvi, 432 p. ill., maps (some col.) 28 cm. Includes bibliographical references (p. 407-408) and index. Conservation of natural resources. Natural resources Management. Conservation of natural resources United States. Natural resources United States Management. Conservation of natural resources North America. Natural resources North America Management. UPD DSCI S938 .C37 1992 Book