Caper, Robert. Immaterial facts : Freud's discovery of psychic reality and Klein's development of his work / Robert Caper. - Northvale, N.J. : Aronson, c1988. - xvii, 266 p. ; 24 cm. - 150.19/5/0922 . Includes index. Bibliography: p. 251-255. ISBN: 0876689918 Subjects--Personal Names: Freud, Sigmund, 1856-1939 --Influence.Klein, Melanie.Freud, Sigmund, 1856-1939. Klein, Melanie. Subjects--Topical Terms: Psychoanalysis.Psychoanalytic Theory. Dewey Class. No.: 150.19/5/0922