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by Cathrin Blöss und Meike Fechner
Almost 500 directors from 74 countries and all continents have taken part in ASSITEJ Germany’s International Directors’ Seminar for TYA since its invention in 1976.
Between 1976 and 1990 the seminar took place annually with few(archive pdf)
More information and the list of participants can be found here: http://www.assitej.de/veranstaltungen/international-directors-seminar/