Gray, William S. Maturity in reading its nature and appraisal by William S. Gray and Bernice Rogers. - [Chicago] University of Chicago Press [1956] - xii, 273 p. illus., tables. 24 cm. Bibliographical footnotes. LCCN: 56013942 Subjects--Topical Terms: Reading LC Class. No.: LB1050 / .G7 Dewey Class. No.: 428.4