Todas las obras relacionadas: Hefti, M.L.
Proceedings of the 15th International Congress of Life Assurance Medicine : Tokyo 1986
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Procedings of the 14th International Congress of Life Assurance Medicine : Brussels 1982
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- Karlsruche : Verlag Versicherungswrirtschaft, cop. 1983
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Proceedings of the 13th International Congress of Life Assurance Medicine : Madrid 1979
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- Berlin : Springer-Verlag : Zurich : Swiss Reinsurance Company, 1980
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