Isnugroho, Kusno; Hendronursito, Yusup; Birawidha, David C
(2016-04-22)
Manganese ore coming from Pringsewu district of Lampung province belongs to
manganiferous ore. Containing approximately 32.27% Mn and 14.87% Fe, this
Pringsewu manganese ore is classified into low grade manganese ...