Third edition, with supplements not present in earlier editions. clxxxix, 472pp. Brown cloth-covered boards with gilt lettering on spine,. blind stamped on front panel. 8vo. Very slightly rubbed and rounded at corners and spine ends. Text block edges a little toned. Two previous owner's names inked neatly on front free endpaper. Occasional small pencil annotations in page margins else internally neat, clean, bright and tight.