1
Publicat 1992
Matèries: ...Testing laboratories Periodicals....
Full text available from Materials Science Database: 03/01/1997 to 01/31/2019
Electrònic Revista
2
Matèries: ...Gemmological Association and Gem Testing Laboratory of Great Britain Periodicals....
Full text available from Earth, Atmospheric & Aquatic Science Database: 01/01/2014 to present
Electrònic Revista