Atwater, Mary Earth's riches / Mary Atwater [and six others] - New York, N. Y.: Macmillan/McGraw-Hill School Publishing Company, c1995. - 80 pages : color illustrations ; photographs ; 25 cm. Includes index. ISBN: 0022761292 Subjects--Topical Terms: Petrology--Study guides Dewey Class. No.: CIR 552 At887 1995