TY  - GEN
AU  - Gunther, Birgit
TI  - Tables of gemstone identification - bestimmungstabellen
SN  - 3-9800292-3-9
PY  - 1988///
CY  - Kirschweiler
PB  - Lenzen
KW  - GEMS
KW  - GEMS-TABLES
N1  - Text in English and German
ER  -