TY - JOUR A1 - De Maré, P. T1 - The Development of the Median Group. T2 - Group Analysis, Vol. 23 (1990), pp. 113-127. Y1 - 1990 UR - https://opus4.kobv.de/opus4-Fromm/frontdoor/index/index/docId/29725 N1 - Ex libris Marco Bacciagaluppi ER -