MINERAL RESOURCES OF MINAS GERAES (BRAZIL) BY ALBERT F. CALVERT, F.C.S., ETC., Knight Grand Cross of The Royal Order of Isabel Royal Order of Alfonso XII., etc. AUTHOR OF Mineral Resources of Western Australia, South-West Africa, NYANFORD LONDON: E. & F. N. SPON, LIMITED, 57, HAYMARKET. NEW YORK: SPON & CHAMBERLAIN, 123, LIBERTY STREET. 1915. |