1970. First Sphere Books Edition. 192 pages. Pictorial paper cover. Pages are moderately tanned and foxed throughout. Pulling to front and rear covers. Minor dog-eared corners. Binding remains firm. Paper covers have moderate edge-wear with curling to corners and rubbing to surfaces. Light tanning to spine and edges. Noticeable ring marks to front cover. Book has a rolled spine. Book has a slight forward lean.