1.

図書
図書
1. The international astrophotographic congress and a visit to certain European observatories and other institutions : report to the superintendent [of the U.S. Naval observatory]
by Albert G. Winterhalter
出版情報: Washington : U.S. Government Printing Office, 1889
シリーズ名: Washington observations ; 1885, Appendix 1
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2.

図書
図書
2. Explanatory supplement to the astronomical ephemeris and the American ephemeris and nautical almanac
prepared jointly by the Nautical Almanac Offices of the United Kingdom and the United States of America
出版情報: London : Her Majesty's Stationery Office, 1961
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3.

雑誌
雑誌
3. American ephemeris and nautical almanac
Nautical Almanac Office, United States Naval Observatory
出版情報: Washington : U.S. G.P.O., -1979
巻次（年次）: -1980 (1980)
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