TY  - BOOK
AU  - Anderson,B.W.(Basil William)
AU  - Jobbins,E.A.
TI  - Gem testing
SN  - 0408060069 (hbk.) /
PY  - 1990///
CY  - London
PB  - Butterworths
KW  - Precious stones
KW  - Identification
KW  - Testing
N1  - Includes index
ER  -