Hits 1-10 within 21 documents
Hits 1-10 within 21 documents
Author(s): Friedrich, Walter.- 1974. 27p.
Author(s): Pinther, Arnold.- 1970. 23p.
Author(s): Kaftan, Burkhard.- 1974. 65p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1970. 161p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1972. 26p.
Author(s): Hopfer, R.; Schneider, E..- 1970. 19p.
Author(s): Hopfer, R.; Wolf, A..- 1970. 26p.
Author(s): Ronneberg, Heinz.- 1976. 54p.
Author(s): Gehrisch, Harald; Wiedemann, Dieter.- 1976. 111p.
Author(s): Richter, W.; Schumann, Lothar.- 1972. 45p.