Wallace, Ben J., 1937- Hill and valley farmers : socio-economic change among a Philippine people / by Ben J. Wallace. - Cambridge, Mass. : Schenkman Pub. Co., [c1970] - xix, 137 p. : illus., ports. ; 23 cm. Bibliography: p. 129-134. Subjects--Topical Terms: Gaddang (Philippine people) Dewey Class. No.: 919.14