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1Livre
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2par Bieberbach Ludwig
Chelsea Publishing cop. 1964, cop. 1964Livre -
3par Caratheodory Konstantin
Chelsea Publishing company cop. 1960Livre -
4par Caratheodory Konstantin
Chelsea Publishing company cop. 1958Livre -
5par Rogosinski Werner
Chelsea Pub. Co. cop.1959Livre -
6par Bohr Harald
Chelsea Publishing 1951Livre