Ruby and Sapphire from the Tan Huong-Truc Lau Area, Yen Bai Province, Northern Vietnam. Nguyen Ngoc Khoi,Chakkaphan Sutthirat,Duong Anh Tuan,Nguyen Van Nam,Nguyen Thi Minh Thuyet,Nguy Tuyet Nhung. Gems and Gemology . 2011Nguyen Ngoc Khoi, Sutthirat, C., Duong Anh Tuan, Nguyen Van Nam,...
heo ua… Hen chi cac cu ta hay noi: Van minh, vo nguoi. Cai cam giac tui than cu bam theo minh mai, cho den khi cai ong thai tu ben Anh Quoc cuoi vo. Mot co ban nhan xet: “Em thay qua that vong khi ong lay mot nguoi dan ba gia nua, xau xi nhu vay, trong...
Phi, Thi DaoVietnam Academy of Science and TechnologyLe, Thi Hong MinhVietnam Academy of Science and TechnologyDoan, Thi Mai HuongVietnam Academy of Science and TechnologyPham, Van CuongVietnam Academy of Science and TechnologySpringer, Cham...