大约克夏 1. Comparison of Pig Lactescence ofYorkshire, Landrace and Duroc; 大约克夏、长白、杜洛克母猪泌乳力的比较 2. The Test of Finishing Performance of PurebredYorkshireandYorkshireCrosses; 英系及英加系杂交大约克夏猪肥育性能测定 3. Study on Productivity and Carcass Quality ofYorkshire-songliao Bla...