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Ingold, Louis, 1872-: Trigonometry (New York: Macmillan, 1914), also by Alfred Monroe Kenyon (multiple formats at Google)Online Books by
Ingold, Louis, 1872-: Trigonometry (New York: Macmillan, 1914), also by Alfred Monroe Kenyon (multiple formats at Google)Help with reading books -- Report a bad link -- Suggest a new listing
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Ingold, Louis, 1872-: Elements of plane trigonometry (The Macmillan company, 1921), also by Alfred Monroe Kenyon (page images at HathiTrust) Ingold, Louis, 1872-: Elements of plane trigonometry (The Macmillan company, 1919), also by Alfred Monroe Kenyon (page images at HathiTrust) Ingold, Louis, 1872-: Trigonometry (Macmillan Co., 1914), also by Alfred Monroe Kenyon and E. R. Hedrick (page images at HathiTrust) Ingold, Louis, 1872-: Vector interpretation of symbolic differential parameters... ([Lancster, Pa.], 1910) (page images at HathiTrust)See also what's at your library, or elsewhere.
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