TY - BOOK A1 - Spitz, René A. T1 - Nein und Ja, Stuttgart (Ernst Klett Verlag) 1957. Y1 - 1957 N1 - Marks in the copy ER - TY - BOOK A1 - Spitz, René A. T1 - The first year of life. A Psychoanalytic Study of Normal and Deviant Development of Object Relations, New York (International Universities Press) 1965. Y1 - 1965 ER -