Camp, William G. Managing our natural resources / William G. Camp and Betty Heath-Camp. - 5th ed. - Clifton Park, NY : Delmar Cengage Learning, c2009. - xiv, 528 p. : col. ill. 29 cm. Includes index. ISBN: 9781428318687 LCCN: 2007-940812 Subjects--Topical Terms: Natural resources--Management--United States--Juvenile literature.Natural resources--Management--Vocational guidance--United States--Juvenile literature. Subjects--Index Terms: Tài nguyên thiên nhiên Quản lý Mỹ LC Class. No.: HC103.7 / .C33 2009 Dewey Class. No.: 333.7 / CAM 2009