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Marianne Keller Dipl. Secondary School Teacher phil. hist. 1950
Economics federal matriculation and language studies in Paris. 1971-1975 teacher training course at the University of Berne. 1975-1981 teacher at a secondary school in Berne. 1981-1983 language and study stay in the United States. Starting 1983 teacher of upper level at secondary school. Marianne Keller joined INFRAS in 1999 in administration and co-ordination.
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