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Study on the Cow Early Pregnancy Diagnose by CuSO4
Li Qingwang, Hu Jianhong, Wang Liqiang, Li Yongpeng, Liu Yongkui, Zan Linsen
Chinese Agricultural Science Bulletin . 2004, (6): 1 -1 .  DOI: 10.11924/j.issn.1000-6850.040601