1969. Sixth, revised edition. 384 pages. Illustrated jacket over green cloth. Includes illustrations throughout. Pages have slight foxing, tanning and minor thumbing. Price sticker to front endpaper. Boards have some moderate edge wear, with slight bumping to corners and minor bumping to spine ends. Unclipped jacket has light edgewear with small tears and creasing. Slight sunning. Spine is noticeably sunned.