Butcher, Harold John. Human intelligence: its nature and assessment [by] H. J. Butcher. - London, Methuen, 1968. - 343 p. illus. 23 cm. - Methuen's manuals of modern psychology . "Distributed in the U.S.A. by Barnes & Noble." Bibliography: p. 292-332. LCCN: 70366097 Nat. Bib. No.: B68-24980 Subjects--Topical Terms: Intellect.Intelligence tests. LC Class. No.: BF431 / .B87 Dewey Class. No.: 153.9 BUT