@inproceedings{inproceedingsae4d1307,
title   = {Determinations of urinary manganese and homovanillic acid in workers exposed to manganese},
author = {Siqueira, Maria Elisa Pereira Bastos de and Moraes, Ester de Camargo Fonseca},
year = {1986},
booktitle   = {International Symposium on Biochemical and Cellular Indices of Human Toxicity in Occupational and Environmental Medicine}
}