Geology of Bredon Hill, Worcestershire
Davison C.F. and Bowie S.H.U. , “ Thucolite - pitchblende , hydrocarbon and moisture - at Laxey lead mine ' , Bulletin of the Geological Society of Great Britain , 3 ( 1951 ) , 4 . Dawson J. , ' Beryllium in the Foxdale Granite ...
U.S. Geological Survey Professional Paper