Results 171 to 180 of about 1,737 (200)

Gemology

2006
Ralph J. Holmes, Robert Crowningshield
openaire   +1 more source

Gemology

Choice Reviews Online, 1992
openaire   +1 more source

New Technologies of the 1980s: Their Impact in Gemology

Gems & Gemology, 1990
George R Rossman
exaly  

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