Liên kết ngoài Sachsen-Hildburghausen

  • (tiếng Đức) Sachsen-Hildburghausen in: Meyers Konversations-Lexikon, 4. Auflage, Band 14 [Meyers Conversational Dictionary, 4th Edition, Volume 14] (Leipzig: Bibliographisches Institut [Bibliographical Institute], 1885–1892), page 146

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