Third Edition, Revised.. 232 pages. No dust jacket. Green cloth covered boards. Black and white illustrations throughout. Publisher's catalog at rear. Pages remain clear with minimal tanning and foxing. Previous owner's inscription to title page. Boards have mild edge-wear with slight rubbing to surfaces. Boards have mild edge-wear with slight rubbing to surfaces. Book has a slight forward lean. Mild crushing to spine ends. Top edge of text block is dust marked.