1.

図書
図書
1. A text-book on spherical trigonometry. 1st ed
by Robert E. Moritz
出版情報: New York : John Wiley , London : Chapman & Hall, 1913
シリーズ名: Trigonometries / by R. E. Moritz
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2.

図書
図書
2. Elements of plane trigonometry (with five-place tables) : a text-book for high schools, technical schools and colleges. 1st ed
by Robert E. Moritz
出版情報: New York : Wiley , London : Chapman & Hall, 1911, c1910
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