Geology of the South Wales coalfield memoir for 1:50 000 geological sheet 231 (England and Wales) / W.J. Barclay,K. Taylor and L.P. Thomas. by Barclay, W. J.

Geology of the south Wales coalfield memoir for 1.50 000 geological sheet 232 (England and Wales).

Other Authors: “…Barclay, W. J.…”

Geology of the country around Worcester : memoir for 1:50 000 geological sheet 199 (England and Wales) / W.J. Barclay ... (et al.), contributors, A.J.M. Barron ... (et al.).

Other Authors: “…Barclay, W. J.…”