TY  - GEN
AU  - Pringles,J.
TI  - British regional geology: South Wales 
AV  - SPE-B 0666 
U1  - 554.29 
PY  - 1948///
CY  - London
PB  - H.M. Stationery Off
KW  - Wales
N1  - At head of title: Natural Environment Research Council. Institute of Geological Science; Includes bibliographies
ER  -