TY  - BOOK
AU  - Welch,F.B.A.
AU  - Trotter,F.M.
TI  - Geology of the country around Monmouth and Chepstow: (explanation of sheets 233 and 250)
T2  - Memoirs of the Geological Survey of Great Britain: England and Wales
AV  - QE262.M65 W4
PY  - 1960/// [i.e. 1961]
CY  - London
PB  - H. M. Stationery Off.
KW  - Geology
KW  - England
KW  - Monmouth
KW  - Wales
KW  - Chepstow
N1  - At head of title: Dept. of Scientific and Industrial Research; Errata slip inserted; Includes bibliographies
ER  -