Darrow, Ken. Appropriate technology sourcebook : for tools and techniques that use local skills... - 2 ed. - Stanford, Calif. : Volunteers in Asia, 1976 - 303 p. : ilus. LCCN: 70747 Subjects--Topical Terms: Innovaciones tecnológicas.Tecnología--Bibliografía. Dewey Class. No.: 600 / D3 1976