Johnson, G. Orville Education for the slow learners. - Englewood Cliffs, N.J. Prentice-Hall 1963. - 330 p. illus. 22 cm. - Prentice-Hall psychology series . LCCN: 63008279 /L/r91 Subjects--Topical Terms: Slow learning children LC Class. No.: LC4661 / .J6 Dewey Class. No.: 371.92