1960. 6th Impression with Amendments. 209 pages. Cream dust jacket over green cloth. Binding remains firm. Pages are lightly tanned throughout. Creasing to some pages, text remains unaffected. Boards have light shelf-wear with corner bumping. Slight crushing to spine ends. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Light tanning to spine and edges. Water staining to spine and front panel. Marking to rear panel.