utilizada
41. O que é uma “Expertise” ou Perícia
(Textos Técnicos/Diamantes)
... que utilizamos desde 1976/77 como orientação em nossas “expertises” são também utilizadas por mais de 20 nações desenvolvidas. Essas duas nomenclaturas não devem ser esquecidas, pois são reconhecidas ...
42. Breve historia
(Textos Técnicos/Ouro)
... de minérios auríferos. A extração de ouro a partir de sulfetos, através da fusão do minério adicionando-se sílica, era utilizada pelos antigos gregos e romanos, assim como o emprego de sal e ácidos ...
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