1975. No Edition Remarks. 413 pages. No dust jacket. Green and black cloth boards with lettering. Contains black and white diagrams. Bright and clean pages with light tanning to text block edges. Binding is firm throughout with minor thumb-marking. Pencil markings to front free endpaper. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Slight crushing to spine ends. Lettering is bright and clear. Visible wear marks to boards.