1972. No Edition Remarks. 368 pages. No dust jacket. This is an ex-Library book. Green cloth with gilt lettering. Contains black and white diagrams throughout. Pages are lightly tanned, but text remains clear. Binding is firm. Library stamps and labels to front endpapers, title page and textblock edges. Boards and spine have minimal shelf-wear, with mild corner bumping and crushing to ends. Gilt remains bright. Visible marks overall. Label to spine tail.