01065cam a22002891 4500 sg 39000028 DLC 20260227112741.0 811121s1937 xx 000 0 eng sg 39000028 (OCoLC)2112226 DLC DNLM OCU DLC premarc HQ772 .L43 WS 350 L668s 1937 136.7 Levy, David M. (David Mordecai), 1892- Studies in sibling rivalry [by] David M. Levy, M. D. ... [New York] The American orthopsychiatric association, 1937. 3 p. l., 5-96 p. ill. Research monographs, no. 2, American orthopsychiatric association Studies begun at the Institute for child guidance; reprinted from articles published in the American journal of orthopsychiatry. cf. p. [5] Sibling rivalry. Psychology, Pathological. Sibling rivalry. American Orthopsychiatric Association. Research monographs ; no. 2. 90300 90300