TY  - BOOK
AU  - Klein, Cornelis, Au.
TI  - Minerals and rocks
SN  - 0471772774
U1  - 549.076 
PY  - 2008///
CY  - New York
PB  - John Wiley & Sons
KW  - Rocks problems and exercise
KW  - Petrology problems and exercise
KW  - Mineralogy problems and exercise
ER  -