Histoire malacologique du Lac Balaton en Hongrie Servain, Georges. creator text book Paris Librairie des sciences naturelles 1881 1881
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FRE Includes errata. Balaton, Lake Balaton, Lake (Hungary) Hungary Mollusks QL425.H9 S49 1881 https://www.biodiversitylibrary.org/bibliography/10458 18075083 10.5962/bhl.title.10458 SMI