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Conradi Gesneri De rerum fossilium lapidum et gemmarum maxim figuris and similitudinibus liber Page BHL. Conradi Gesneri De rerum fossilium lapidum et gemmarum maxim figuris similitudinibus liber non solm medicis sed omnibus rerum naturae ac philologiae studiosis vtilis iucundus futurus Page Text Illustration biodiversitylibrary