Tough, Allen M. The adult's learning projects a fresh approach to theory and practice in adult learning Allen Tough. - 2d ed. - Austin, Tex. Learning Concepts 1979. - xii, 207 p. 20 x 21 cm. - Research in education series no. 1 . Bibliography: p. 199-205. ISBN: 0893840548 6.95 6.95 LCCN: 80469937 //r85 Nat. Bib. No.: C79-94462-6 Subjects--Topical Terms: Adult education LC Class. No.: LC5219 / .T58 1979 Dewey Class. No.: 374/.1