Vocational training of young people in new forms of employment : conference report, report on CEDEFOP conference within the framework of the research project "vocational training of young people in new forms of employment" Berlin, 15-17 May 1984 / prepared by (the Projektgruppe, Sozialpädagogische Orientierte Berufsausbildung) Hans-Joachim Petzold, Wolfgang Schlegel, Per-Marcel Ketter