British regional geology: South Wales,

J. Pringle b. 1877. (John), T. Neville George 1904- (Thomas Neville),; Geological Survey of Great Britain; Museum of Practical Geology (Great Britain)

London, H.M. Stationery Off. 1948

Localização: IGC - Instituto de Geociências    (554.2 P957b 2.ed. )(Acessar)