1964. Second Edition. 660 pages. This is an ex-Library book. Blue and grey jacket over blue cloth with silver lettering. graphs throughout. Expected library inserts, stamps and inscriptions. Pages remain bright and clear. Noticeable marking to textblock edges. Binding is firm. Boards and spine have minimal shelf-wear, with minor corner bumping and crushing to ends. Silver remains bright. Unclipped jacket. Light tanning and foxing to all surfaces. Visible water staining to inside front panel. Moderate edgewear with noticeable tearing. Visible rub wear.