1972. No Edition Remarks. 360 pages. Illustrated dust jacket over brown cloth boards with lettering. Contains black and white diagrams. Clean pages and diagrams with noticeable tanning and foxing throughout. More pronounced to free endpapers and pastedowns. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Lettering is bright and clear. Moderate sunning to spine and edges with crushing to spine ends. Visible wear marks to boards. Unclipped jacket. Panels and spine have light edgewear with tears and creases. Moderate tanning, pen and wear marks to flaps, panels and spine.