TY  - BOOK
AU  - Wahlstrom, Ernest Eugene
TI  - PETROGRAPHIC MINERALOGY
U1  - 549.1 
PY  - 1955///
CY  - N. Y.
PB  - Wiley
KW  - Mineralogy, Determinative
KW  - Rocks -- Classification And Nomenclature
N1  - Includes Bibliography
ER  -