Grandstaff, Marvin. Program of studies in Non-formal education discussion papers / Number one non-formal education and and expanded conception of development / - East Lansing : Program of Studies in Non-Formal Education, Michigan State University, 1974. - 46 , 41 p. ; ISBN: SSCB3853 Subjects--Topical Terms: Literacy. Dewey Class. No.: 371.04 / Pr