The Practice of Refraction by Duke Elder
1928. 410 pages. No dust jacket. Green boards. Binding is firm. Previous owner's name to endpaper. Light tanning and thumb marking throughout. Mild foxing, mainly affecting the endpapers and page edges. Light page scuffing with some dog-eared corners. Boards have mild shelf wear with light rubbing, scuffing and corner bumping. Some light marking and sunning. Boards are a little limp and book has a forward lean.