InstitutionZentralinstitut für Jugendforschung (ZIJ) (3)Author
Mehlhorn, Hans-Georg (3)
Date Issued1985 (1)1984 (2)Document Typeresearch report (2)working paper (1)KeywordDDR (3)Erfindung (3)
fair (3)
German Democratic Republic (GDR) (3)Innovation (3)...view moreReviewreviewstatus unknown (3)Publication StatusUnknown (3)