au.\*:("WIRTH AA")
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AUSTRALIA AND GEMMOLOGY : NOMENCLATURE AND TRADING, PART. 3.WIRTH AA.1968; AUSTRAL. GEMMOLOGIST; AUS; 1968(2), VOL. 10, NUM. 0001, P. 20 A 21Miscellaneous
AUSTRALIA AND GEMMOLOGY : NOMENCLATURE AND TRADING. PART 3.WIRTH AA.1968; AUSTRAL. GEMMOLOGIST; AUS; 1968(5), VOL. 10, NUM. 0002, P. 21 A 23Miscellaneous
