Gehrmann, James. Trigonometry / James Gehrmann and Thomas Lester. - San Diego : Harcourt Brace Jovanovich, c1984. - vii, 278 p. : ill. - Harcourt Brace Jovanovich college outline series Books for professionals . ISBN: 0156016931 (pbk.) Subjects--Topical Terms: Trigonometry. LC Class. No.: QA531 / .G44 1984 Dewey Class. No.: 516.2/4�19