1949. 4th edition. 150 pages. Pictorial dust jacket over blue cloth. Contains black and white illustrations. Moderate tanning, with light foxing and marking to pages. Some rub-marking and foxing to pastedowns and endpapers. Boards have mild shelf wear with light rubbing and corner bumping. Some light marking and sunning. Boards are slightly bowed. Clipped jacket with heavy edge wear, large tears and chipping causing loss around edges and spine. Moderate tanning and creasing, with rubbing and marking.