Buchanan, Keith The transformation of the Chinese earth : aspects of the evaluation of the Chinese earth from earliest times to Mao Tse-tung / Keith Buchanan - New York : Praeger , 1970 - 336p. : ill. ; 26 cm. Includes bibliographical references and index. Subjects--Topical Terms: Physical geographyEconomic conditionsGeography--China Dewey Class. No.: 915.1 / BUC