Rittmann, Alfred, 1893-1980. Volcanoes / [electronic resource] / A. and L. Rittmann.. — New York : : Putnam,, c1976.. — 128 p. : : ill. (some col.) ; 31 cm. Includes bibliographical references (p. 127) and index. ISBN: 0399117253 9780399117251 LCCN: 76006035 Subjects--Topical Terms: Volcanoes. LC Class. No.: QE521.2 / .R57 1976 Q551.21 R Dewey Class. No.: 551.2/1