Sixteenth edition. 48pp. Blue cloth-covered boards; gilt titles on front. Landscape 4to. Sun-faded boards and spine, bumped spine ends, corners rounded, front bottom corner lightly bumped. Top text block edge dusty, remaining edges starting to tan and fox. Endpapers starting to fox and tan. Previous owner's name on front free endpaper. Internally neat, clean, bright and tight. Dust jacket has significant loss and foxing, water stains on rear, closed tears, not price clipped.