TY  - BOOK
AU  - Gilbert, C.M/Turner, F.J/ Williams, H
TI  - Petrography: An introduction to the study of rocks in thin sections
SN  - 716702061
AV  - QE 431 .W5 1954
PY  - 1954///
CY  - San Francisco
PB  - W.H Freeman
KW  - Rocks
ER  -