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7“... Sonntag, published in the Philadelphia evening journal, May 19th [1857?] Mode of access: Internet....”
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8by Sonntag, August.“... Sonntag, published in the Philadelphia evening journal, May 19, 1857? Mode of access: Internet....”
Published 1857
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9by Sonntag, August“...."--Letter from August Sonntag, published in the Philadelphia evening journal, May 19, 1857? Electronic text...”
Published 1857
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12by Gorshkov, Sergei Georgievich, Soviet Union. Voenno-Morskoĭ Flot, Glavnoe Upravlenie Navigat︠s︡ii i Okeanografii Ministerstva Oborony SSSR.“...5 maps on 1 sheet. Showing ports of the Chesapeake Bay. ports of Philadelphia and Hamilton. Relief...”
Published 1977
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14by Zeidler, Wolfgang“... of the Academy of Natural Sciences of Philadelphia (Crustacea: Amphipoda: Hyperiidea). Proceedings of the Academy...”
Published 2004
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15by Zeidler, Wolfgang“... of the Academy of Natural Sciences of Philadelphia (Crustacea: Amphipoda: Hyperiidea). Proceedings of the Academy...”
Published 2004
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