TY  - BOOK
AU  - Read, Peter G.
TI  - Gemmological instruments
SN  - 0408011904
U1  - 549.1REA 20
PY  - 1983///
CY  - London
PB  - Butterworths
KW  - Gemmological instruments
KW  - Precious stones
KW  - Chemistry
ER  -