1966. First Edition. 474 pages. Illustrated dust jacket over green cloth boards. Gilt lettering. Contains black and white diagrams. Clean pages and diagrams with light tanning and mild foxing throughout. More pronounced to free endpapers and pastedowns. Pen inscriptions and markings to front pastedown, free endpaper and title page. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Gilt lettering is bright and clear. Minor wear marks to boards. Unclipped jacket. Panels and spine have light edgewear with tears and creases. Moderate tape repairs to interior jacket. Visible wear marks to spine and panels.