British regional geology : Bristol and Gloucester district /
F . B. A. Welch and R. Crookall ; edited by G. A. Kellaway and B. A. Welc h.
- London : H. M. Stationery Office, 1948.
- iv, 99 p. : ill., maps ; 25 cm.
At head of title: Department of Scientific and Industrial Research. Geological Survey and Museum. "Maps & publications dealing with the region: p. 97-99.