Hatfield, Larry L. Investigating mathematics : student resource book / [Larry L. Hatfield]. - New York : Glencoe, c1994. - xii, 352 p. : col. ill. ; 27 cm. Includes index. ISBN: 067513160X LCCN: 93239476 Subjects--Topical Terms: Mathematics LC Class. No.: QA39.2 / .H3655 1994 Dewey Class. No.: 510