Publisher, Watkins, London, 1978, pp.103 + 5 b/w illus/diagrams
Vol 1. Hardback, bound in soft-grey book-cloth with brown lettering to spine and front cover.
Condition, Used – very good: a clean and tight binding, text-block free of notes and highlights.
Includes a folding chart bound in the rear.
Vol. 2. Second Edition, published by Element Books, 1988, Shaftsbury.
Paperback – Stiff wrappers, format a little shorter than vol 1., pp.126 with text illustrations.