http://www.zhangqiaokeyan.com/academic-journal-cn_china-animal-husbandry-veterinary-medicine_thesis/0201261303185.html
掌桥科研
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http://epub.cnki.net/grid2008/docdown/docdownload.aspx?filename=GWXK201012019&dbcode=CJFD&year=2010&dflag=pdfdown
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http://doc.paperpass.com/journal/20100770zgxmsy.html
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http://210.75.237.14/bitstream/351003/20837/1/2010c0025h.pdf
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