FERREIRA, A M [Data on the signs of manganism in the workers of the mines of Quitota]. [electronic resource] - Anais do Instituto de Medicina Tropical Sep 1956 - 477-86 p. digital Publication Type: Journal Article ISSN: 0365-3307 Subjects--Topical Terms: HumansManganeseManganese PoisoningMiningPhysical Examination