Gunther, Birgit
Tables of gemstone identification - bestimmungstabellen - Kirschweiler Lenzen 1988 - 162 p.
Text in English and German
3-9800292-3-9
GEMS
GEMS-TABLES
549.091(083) / G8
Tables of gemstone identification - bestimmungstabellen - Kirschweiler Lenzen 1988 - 162 p.
Text in English and German
3-9800292-3-9
GEMS
GEMS-TABLES
549.091(083) / G8