Wave Mechanics by Arnold Sommerfeld
1930. 1930 Reprint. 304 pages. No dust jacket. Red cloth. Pages are lightly tanned and thumbed at the edges, with light foxing. Binding has remained firm. Boards are a little rub worn, slight shelf wear to corners, spine and edges. Corners are a little bumped. Spine ends are mildly crushed. Moderate tanning to spine and edges.