摘要
Our CRIC thanks deeply to the kind fi-nancial support from:Dr.Y.Kudo of Wake Bussan Co.Ltd.,JapanDr.Norton Jackson of SX Holdings Ltd.,South AustraliaDr.Ann Pogue of 258 Barbara Avenue,U.S.A.Dr.A.J.Gitter of a division of Hi-Purity Materials Inc.,U.S.A.Zhujiang Refinery of Guangdong,ChinaYangjiang Rare Earth Factory of Guang-