Die Durchsichtigkeit der Luft über dem Aegäischen Meere nach Beobachtungen der Fernsicht von der Insel Thera Aus : Mit 3 Abb. im Text U. 3 Beil. , aus: Thera : Untersuchungen, Vermessungen und Ausgrabungen in den Jahren 1895 - 1898, Bd. 4, T. 1

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