1966. Second Edition Revised. 382 pages. No dust jacket. This is an ex-Library book. Green cloth boards with gilt lettering to spine. Expected library inserts, stamps and inscriptions. Black and white photographic plates and graphs & charts throughout. Binding remains firm. Crinkling to pages at gutters. Pages remain bright and clear with minimal tanning. Boards have mild edge wear with slight rubbing to surfaces. There is bumping to corners and crushing to spine ends. Tanning to spine and edges. Gilt lettering is bright and clear. Book has a slight forward lean. Boards are bowed.