A Textbook of Elementary Trigonometry by R. S. Heath
1913. No Edition Stated. 219 pages. No dust jacket. Green cloth with black lettering. Pencil marking to pages on occasion. Minimal foxing and tanning to endpapers and page edges. Some gutter cracking. Mild wear and bumping to spine, board edges and corners, with small splits and crushing to spine ends. Notable sunning to spine, with scuffing, staining and marking to boards.