1971. Third Edition. 163 pages. Illustrated dust jacket over brown cloth boards. Gilt lettering. Clean pages with light tanning and mild foxing throughout. Minor tanning to free endpapers due to dust jacket flaps. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Gilt lettering is bright and clear. Unclipped jacket. Panels and spine have light edgewear with tears and creases. Visible wear and water marks to spine and panels.