1948. Third Edition. 266 pages. Pictorial dust jacket over orange cloth. Contains colour photographic plates. Clear plastic Identification Squares insert tucked into rear of book. Pages and plates are lightly tanned and foxed throughout. Light thumb-marking present. Binding remains firm. Boards have mild edge wear with slight rubbing to surfaces. Soft crushing to spine ends. Mild sunning to spine and edges. Clipped jacket has heavy edge wear with some areas of loss, heavy tears, chips and creasing. Light tanning to spine and edges.