1964. First Edition. 159 pages. Pictorial dust jacket over pictorial cloth. Black and white diagrams throughout. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. Unclipped jacket has heavy edge wear with tears, chipping and creasing. Tape around bottom.