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3Conference Proceeding BookPublished 1994Other Authors: “…Börger, E. (Egon), 1946-…”
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4Conference Proceeding BookPublished 1990Other Authors: “…Börger, E. (Egon), 1946-…”
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5Conference Proceeding BookPublished 1988Other Authors: “…Börger, E. (Egon), 1946-…”
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6Conference Proceeding BookPublished 1989Other Authors: “…Börger, E. (Egon), 1946-…”