1976. Third Edition. 192 pages. Illustrated dust jacket over red cloth covered boards. Colour illustrated plates. Pages remain clear with minimal tanning and foxing. A little felt tip to the final page. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends. Book has a slight forward lean. Unclipped jacket has light edge-wear with tears and creasing. Moderate tanning to spine.