TY  - BOOK
AU  - Williams,Howel .
AU  - Turner, Francis J.
AU  - Gilbert, Charles M.
TI  - Petrography: : an introduction to the study of rocks in thin sections 
U1  - 552.2 
PY  - 1985///
CY  - New Delhi
PB  - CBS Publishers
KW  - Petrology
KW  - Thin sections (Geology)
ER  -