1998. Fourth Edition. 334 pages. Paperback book with pictorial cover, with white spiral binding. Contains black and white illustrations throughout. Pages remain bright and clear with minimal tanning and foxing. Pencil inscription to half title page.Minor dog-eared corners. Binding remains firm. Paper covers have mild edge-wear with slight rubbing to surfaces. Some curling to corners. Visible sunning to edges. Light scuffing to edges.