Haifeng Xu

• Fa lü jian du de li lun yu shi zheng yan jiu
• Nong cun jing ji fa lü gu wen
• She wai zhi shi chan quan bao hu fa lü shi wu
• Shou du jian cha shi da jing pin xing shi su song jian du an li
• Xing se no zhu zhai mei xue
• 睢宁煤矿志