1.

図書
図書
1. Geodesy : the figure of the earth and isostasy from measurements in the United States
by John F. Hayford
出版情報: Washington : Government Printing Office, 1909
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2.

図書
図書
2. Geodesy : supplementary investigation in 1909 of the figure of the earth and isostasy
by John F. Hayford
出版情報: Washington : Government Printing Office, 1910
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3.

図書
図書
3. A text-book of geodetic astronomy
by John F. Hayford
出版情報: New York : J. Wiley, 1910, c1898
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