TY - JOUR A1 - Cowie, John T1 - XYY Constitution in Prepubertal Child T2 - British Medical Journal ( No. 1, 23. March, 1968), pp. 748-749. Y1 - 1968 UR - https://opus4.kobv.de/opus4-Fromm/frontdoor/index/index/docId/7531 N1 - Scan of Fromm's xeroxcopy ER -