TY  - BOOK
AU  - JOHANNSEN, ALBERT
TI  - A Descriptive Petrography of The Igneous Rocks
U1  - H2.1 
PY  - 1939///
CY  - BOMBAY
PB  - ALLIED PACIFIC PRIVATE LIMITED
KW  -  PETROLOGY
KW  -  ROCKS --CLASSIFICATION.
KW  - IGNEOUS ROCKS.
ER  -