Wells Stuart Instructional technology in developing countries - New York Praeger Publishers U. S. A. 1976 - xii, 178p. cm. - Praeger Special Studies in International Economics and Development . Bibliography p.165-74 ISBN: 0275237508 Source: General Book Subjects--Topical Terms: EducationTeaching Techniques Dewey Class. No.: T:3,1.1(X).N7, L6