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WikiPedia: Nguyễn_Hữu_Hanh http://books.google.com/books?id=fqPNIYTAkMcC&pg=P... http://www.viet-studies.info/kinhte/HoiKy_NguyenHu... http://www.talawas.org/talaDB/showFile.php?res=831... http://www.talawas.org/talaDB/showFile.php?res=831... http://www.talawas.org/talaDB/showFile.php?res=832... http://www.talawas.org/talaDB/showFile.php?res=834... http://www.talawas.org/talaDB/showFile.php?res=835... http://antg.cand.com.vn/Tu-lieu-antg/Nguyen-Huu-Ha... http://antg.cand.com.vn/Tu-lieu-antg/Nguyen-Huu-Ha...