1973. Revised Edition. 242 pages. Illustrated dust jacket over blue paper covered boards. Contains black and white illustrations. Clean pages and illustrations with light tanning and mild foxing throughout. Pencil inscription to front free endpaper. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Unclipped jacket. Panels and spine have moderate edgewear with chips, tears and creases. Visible wear marks to spine and panels.