Pennington, Piers. The great explorers / Piers Pennington ; [editor, Mitzi Bales]. - New York : Facts on File, c1979. - 336 p. : ill. ; 30 cm. Includes index. ISBN: 0871964112 : $17.50 LCCN: 79015413 Subjects--Topical Terms: Explorers--Biography. LC Class. No.: G200 / .P36 1979 Dewey Class. No.: 910.92/ / PEN