xii, 230pp, fold-out chart in rear. Blue cloth-covered boards, red titles on spine. 12mo. Lightly rubbed bottom corners and pine ends. Text block edges just starting to tan. Free endpapers starting to tan. Internally neat, clean, bright and tight. Dust jacket sun-faded, some soiling, 1cm closed tear bottom of front, chipping to edges, mirrors book damage, price clipped.