TY  - BOOK
AU  - WAHLSTROM
TI  - IGNEOUS MINERALS AND ROCKS
U1  - GN552.1W126I 
PY  - 1947///
CY  - LONDON
PB  - JOHN WILEY& SONS INC
KW  - IGNEOUS MINERALS AND ROCKS
N1  - MODERN BOOK HOUSE
ER  -