Origin of emerals deposits of Brazil /Giuliani, Gaston Silva, L.J.H.D. Couto, P. GITOLOGIE METALLOGENIE MINERALISATION PARAGENESE PETROGRAPHIE MINERALOGIE EMERAUDE 1990 text https://www.documentation.ird.fr/hor/fdi:34825 fdi:34825 Giuliani Gaston, Silva L.J.H.D., Couto P.. Origin of emerals deposits of Brazil. 1990, 57-64 EN BRESIL