Epstein, William Varieties of perceptual learning. - New York McGraw-Hill [1967] - 323 p. illus. 23 cm. - McGraw-Hill series in psychology . Includes bibliographies. LCCN: 66025475 //r86 Subjects--Topical Terms: Perceptual learning. LC Class. No.: BF292 / .E63 Dewey Class. No.: 152.1