British regional geology : South Wales - Pringle, John, 1877-; London. Museum of Practical Geology (London : H. M. Stationery Office, 1948)
At head of title: Department of scientific and Industrial research. Geological Survey and Museum.
" List of references at end of most chapters, "Maps and publications dealing with South Wales: p. 99-100.
Keywords: George, Thomas Neville, -- 1904-; Geplogy -- Wales; Great Britain. -- Geological Survey