1971. Revised Edition. 555 pages. Green dust jacket over green cloth. Book has been rebound. Heavy tanning and foxing to pages and text block edges. Title page is loose. Some rub-marking and tanning to pastedowns and endpapers. Boards have mild shelf wear with light rubbing and corner bumping. Some light marking and sunning. Book has noticeable backward lean. Unclipped jacket has light edge wear with minor tears and chipping. Moderate tanning and creasing, with rubbing and marking.