TY  - BOOK
AU  - Crookall,R.
TI  - British regional geology - Bristol and Gloucester District
T2  - 19ème Congrès Géologique International, Alger, 1952
PY  - 1948///
CY  - London
PB  - His Majesty's Stationery Office
KW  - Conferences - Meetings
ER  -