Hits 1-4 within 4 documents
Hits 1-4 within 4 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1981. 74p.
Author(s): Felber, Holm.- 1985. 16p.
Author(s): Gerth, Werner; Kasek, Leonhard; Pinther, Arnold; Starke, Kurt; Süße, Heinz.- 1985. 24p.
Author(s): Thiele, Gisela.- 1988. 33p.