Sykes, Percy. A history of exploration : from the earliest times to the present day / Percy Sykes. - 3rd ed. - London : Routledge and Kegan Paul, 1949. - 426 p. : ill. ; 25 cm. Includes index. 318 318 Subjects--Topical Terms: Discoveries in geography. Dewey Class. No.: 910 / S44h