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Hits 1-4 within 4 documents
Author(s): Mohler, Peter Ph..- 1982. 9p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1982. 35p.
Author(s): Lindner, Bernhard.- 1982. 21p.
Author(s): Porst, Rolf.- 1982. 46p.