SCIENCE FOUNDATION COURSE UNIT 24 MAJOR FEATURES OF THE EARTH'S SURFACE - 0 - U.S.A. THE OPEN UNIVERSITY PRESS 1971 - 104 pag 30 cm - 0 0 . LIST OF SCIENTIFIC TERMS/CONCEPTS AND PRINCIP[LES Subjects--Topical Terms: CIENCIAS PURAS Dewey Class. No.: 551.241 / S28