TY  - BOOK
AU  - Ehlers,Ernest G.
AU  - Blatt,Harvey
TI  - Petrology: igneous, sedimentary, and metamorphic 
SN  - 0716712792
AV  - QE431.2 .E38
U1  - 552 19
PY  - 1982///
CY  - San Francisco
PB  - Freeman
KW  - Petrology
KW  - Textbooks
N1  - Includes bibliographies and indexes
ER  -