TY  - BOOK
AU  - Paul F.Kerr
TI  - Optical mineralogy
SN  - 0070342180
U1  - 549.125 
PY  - 1977///
CY  - New York
PB  - Mcgroe hill comp.
KW  - Optical mineralogy
KW  - Mineralogy, Determinative
ER  -