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Heilongjiang Animal Science and Veterinary Medicine
1004-7034
1997 Issue 4
huan shi xi suan bei yu fang mian yang que xi zheng de shi yan yan jiu
sun hong yuan
..............
page:22-23
en nuo sha xing he ru suan huan bing sha xing zhi liao nai niu zi gong nei mo yan de lin chuang guan cha
du li yin
..............
page:20-22
