1965. First Edition. 94 pages. Pictorial dust jacket over orange cloth. Fold-out black and white diagrams. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. Some pencil marginalia. Boards have light shelf wear with minor corner bumping and crushing to spine ends. Unclipped jacket has light edge wear with minor tears, chipping and creasing. Some tanning and foxing to all surfaces, particularly to spine.