1974. No Edition Stated. 386 pages. No dust jacket. This is an ex-Library book. Green pictorial paper-covered boards. Contains black and white diagrams and photographs throughout. Expected library inserts, stamps and inscriptions. Pages remain bright and clear. Binding is firm. Boards have moderate shelf-wear, with noticeable corner bumping and some scuffing to edges. Noticeable crushing to spine ends. Small black marks overall.