About DELFINI M
About Univ. Rome ”La Sapienza”, Via Eudossiana, Roma, ITA
About MANNI A
About Univ. Rome ”La Sapienza”, Via Eudossiana, Roma, ITA
About MASSACCI P
About Univ. Rome ”La Sapienza”, Via Eudossiana, Roma, ITA
About Minerals Engineering
About gravity concentration
About Gravity concentration in general
About Recycling of resources
About 宝石
About 屑
About 金