Duffy, Gerald G. How to teach reading systematically / Gerald G. Duffy and George B. Sherman, with Richard L. Allington, Michael R. McElwee and Laura R. Roehler - New York : Harper & Row, 1973 - xxiii, 325 p. ; 24 cm. Includes bibliographies. ISBN: 006041782X LCCN: 72-012473 Subjects--Topical Terms: Reading