Worth Publishers 1981 3rd ed. Hardcover Fair. No dust jacket as issued. 686 p. Audience: General/trade. Published in 1981, a still sturdy Sturdy hardcover book with shelf wear and edge wear to the covers. The back cover has an uplift. The back cover does not lay completely flat to the text. This is minor. The corners show wear Some shelf wear to the covers. The text flows clearly from beginning to end. Quite a reliable text inside. Useful!