Gems & jewellery, August 2007: title page (Gemmological Association of Great Britain) page 1 (Gemmological Association of Great Britain; association agreed at meeting in June 2007 to change name from Gemmological Association and Gem Testing Laboratory of Great Britain back to Gemmological Association of Great Britain, which is how generally known anyway) page 4 of cover (Gem-A, The Gemmological Association of Great Britain)
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GRIL NACO contribution (n.d.)
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Library of Congress Authorities online (2002-) http://id.loc.gov/authorities/names/no2014042370 | |