1968. Published with revision. 223 pages. This is an ex-Library book. Paperback book with pictorial cover. Ex-library copy, with expected inserts and inscriptions. Neat, clean, with heavy tanning and foxing to pages and text block edges. Occasional thumbing throughout and mild cracking to front hinge. Inserts to fep and reverse side of front cover. Paper cover has moderate edge-wear with light rubbing and creasing. Small tears and chipping, with heavy tanning and marking overall.