1.

雑誌
雑誌
1. Report of the superintendent of the United States Naval Observatory for the year ending ...
United States Naval Observatory
出版情報: Washington, D.C. : G.P.O., -1905
巻次（年次）: -1905 (1905)
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2.

図書
図書
2. Observations made during the year ... at the United States Naval observatory (1883 - 1891)
United States Naval Observatory
出版情報: Washington : Government Printing Office, 1887-1899
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