TY - BOOK A1 - Shazer, S. de T1 - Clues. Investigating Solutions in Brief Therapy. New York (Norton) 1979. Y1 - 1979 UR - https://opus4.kobv.de/opus4-Fromm/frontdoor/index/index/docId/28638 N1 - Ex libris Marco Bacciagaluppi ER -