Ryukyu Islands Economic Statistics.

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Ryukyu Islands Facts Book.

Ryukyu Islands (United States Civil Administration, 1950-1972). Office of the Comptroller.

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Ryukyu (Loochoo) islands.

United States. Office of the Chief of Naval Operations.

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Ryūkyū Bungaku Kenkyū.

Rizaburō. Tajima

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Ryūkoku Daigaku ichiran.,龍谷大學一覽.

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Ryūkyū Gakuten Kururunshī

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Civil Administration of the Ryukyu Islands.

Ryukyu Islands (United States Civil Administration, 1950-1972). Office of the High Commissioner.

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Ryūkyū Daigaku Nōgakubu gakujutsu hōkoku.

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Maritime Ryukyu, 1050–1650

Smits Gregory

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