1963. Seventh Edition. 212 pages. Illustrative jacket over green cloth. Contains black and white illustrations throughout. Pages remain bright and clear with minimal tanning and foxing. Thumb-marking present. Light creasing to gutter. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Light crushing to spine ends. Some tanning to spine and edges. Minor marks to boards. Unclipped jacket has moderate edgewear with chips, tears and creasing. Loss to spine ends. Some tanning to spine. Visible rubbing to surfaces. Scuffing to edges.