TY  - BOOK
AU  - Edwards, Merwin Guy,
TI  - Introduction to optical mineralogy and petrography: the practica l methods of identifying minerals in thin section with the microscope a nd the principles involved in the classification of rocks 
U1  - 552 22
PY  - 1916///
CY  - Cleveland, Ohio
PB  - [The Gardner printing co.]
KW  - Mineralogy
KW  - Petrology
ER  -