TY  - BOOK
AU  - Bates,Robert L.
AU  - Sweet,Walter C.
AU  - Utgard,Russell O.
TI  - Geology: an introduction 
SN  - 0669743283 :
PY  - 1973///
CY  - Lexington, Mass.
PB  - D. C. Heath and Co.
KW  - Geology
ER  -