求助2012年英文文献一篇

john7812x

Survey of nine abortifacient infectious agents in aborted bovine fetuses from dairy farms in Beijing, China, by PCR.
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  W; u. F0 a" h) O" v6 _: sActa Vet Hung. 2012 Mar;60(1):83-92.
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1 u4 ?0 Z& K6 XYang N, Cui X, Qian W, Yu S, Liu Q.9 |; t2 _5 }! m: Y* r) o! d

! i' ?9 u0 e+ z+ p$ A: z$ ~- c& Hhttp://www.ncbi.nlm.nih.gov/pubmed/223661345 A7 o0 ~2 B- i8 L* n- U7 W" i

wrh-alon

求When Are Two Heads Better than One and Why?

juxingda

希望有帮助