GC plus. Sphere Books, 1991. Reprinted. Paperback (small tear on the edges of the spine, small marks, nicks and creases on the edges of the cover and spine) in GC plus. Illustrated with b/w drawings. Clean pages with small marks and slightly tainted on the outer edges, some foxing marks inside the front and back covers, small marks and creases on the edges of the pages. The book is in GC with some shelf wear. 127pp.