TY  - BOOK
AU  - Pocock,R.W.
AU  - Whitehead,T.H.
ED  - Geological Survey of Great Britain.
ED  - Museum of Practical Geology (Great Britain)
TI  - British regional geology: The Welsh borderland,
AV  - QE262.W2 P6
PY  - 1935///
CY  - London
PB  - H. M. Stationery Off.
KW  - Geology
KW  - Wales
N1  - At head of title: Department of Scientific and Industrial Research. Geological Survey and Museum; "Maps, publications, etc., dialing with the district": p. 82-84
ER  -