TY - BOOK TI - College trigonometry / Richard N. Aufmann, Vernon C. Barker, Richard D. Nation, Jr.. T3 - Aufmann, Richard N.. College algebra and trigonometry series AU - Aufmann, Richard N. A2 - Barker, Vernon C. A2 - Nation, Richard CY - Boston, MA PB - Houghton Mifflin Co PY - 1990 LA - English SN - 0395526248 N1 - With answers ER -