1961. 11th Printing. 521 pages. This is an ex-Library book. Pictorial dust jacket over green cloth. Library copy, with expected inserts, stamps and inscriptions. Binding remains firm. Pages are lightly tanned throughout. Tape and marking to endpapers and pastedowns. Boards have light shelf-wear with corner bumping. Slight crushing to spine ends. Tape to both boards. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Tape marking to flaps.