TY  - BOOK
AU  - Layell, Charles.
AU  - Rudwick,Martin J.S.
TI  - Principles of geology
SN  - 8121100380
U1  - 550 22
PY  - 1990///
CY  - Dehra dun, India
PB  - Bishen Singh Mahendra Pal Singh
KW  - Geology
N1  - Includes bibliography and index
ER  -