Study guide to accompany Nanney & Cables trigonometry : a skills approach lecture version / John Tobey and Henry Harmeling. Tobey, John. Trigonometry Early works to 1800. Arithmetic Early works to 1800. 514 TOS Reproduction of original in the Cambridge University Library. London : Allyn & Bacon, c1980. c1980. 1680 Text 102 p. : ng Early English books online.