Edited by Brian Hesketh.
First published in Great Britain in 1967. Cassell and Company Ltd, London.
Hardcover, dust jacket, 181 pages, two-tone drawings throughout.
The usual chapters - histiry, prerequisites for diving, techniques, equipment, safety and first-aid, diving physics, medical aspects, the environment and hazardous marine animals, specialist diving activities. Probably popular in its time, but of little historic value.