1969. No Edition Remarks. 569 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. Pencil and pen markings to front pastedown and free endpaper. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Gilt lettering is bright and clear. Unclipped jacket. Panels and spine have light edgewear with tears and creases. Visible wear marks to spine and panels.