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1gan Dame, Frederick William, 1946-
Cyhoeddwyd 1981
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2gan Rohrbach, Marianne von Wartburg-Adler von, 1930-, Rohrbach, Marianne von Wartburg-Adler von, 1930-
Cyhoeddwyd 1988
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3gan Meuwly, Olivier
Cyhoeddwyd 1990
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