TY - RPRT TI - The manganese and iron deposits of Morro de Urucum, Mato Grosso, Brazil AU - J. V. N. Dorr AU - C.W. Buckey PY - 1945 DO - 10.3133/ofr4564 UR - https://pubs.usgs.gov/publication/ofr4564 ID - ofr4564 ER -