TY  - BOOK
AU  - Smith,Bernard
AU  - George,Thomas Neville
TI  - British regional geology : : North Wales / 
U1  - 554.29 SMI 
PY  - 1948///
CY  - London : 
PB  - H. M. Stationery Office , 
KW  - Geology
KW  - Wales
KW  -  Great Britain.
KW  -  Geological Survey
KW  -  London
KW  -  Museum of Practical Geology
N1  -  At head of title: Department of Scientific and Industrial Research. Geological Survey and Museum;  Includes bibliography
ER  -