Bing HeBooksZhe shi shui de jiao yinZhongguo dang dai hua tan liu shi jiaZhongguo xian dai yu piao jiao yi tu luCheng shi sheng tai shui li gui huaEfficient information retrieval from The World Wide WEBDang dai guo ji guan xi zhong de "di san zhe"Nanning su du =Alphabet ZenAuthor data: Open Library