John Arthur Sheppard (31 March 1909 – 14 July 2001) was a pioneer of cave diving in the United Kingdom and a founder, together with Graham Balcombe, of the Cave Diving Group.
John Arthur Sheppard (31 March 1909 – 14 July 2001) was a pioneer of cave diving in the United Kingdom and a founder, together with Graham Balcombe, of the Cave Diving Group. (en)
John Arthur Sheppard (31 March 1909 – 14 July 2001) was a pioneer of cave diving in the United Kingdom and a founder, together with Graham Balcombe, of the Cave Diving Group. (en)