Fronk, Robert H. Earth science / Robert H. Fronk, Linda B. Kninght - 1st ed. - Austin : Holt, Rinehart and Winston, 1994 - xix, 700 p. : col. ill. ; 25 cm. At head of the title : Holt earth science ISBN: 0080325145 Subjects--Topical Terms: Earth sciencesEarth