livestockstructure相关论文
Why goat and sheep production increases more in the livestock structure of rural households in Niger
Livestock position is becoming more and more important.In Nigeria,though the GDP of Livestock has increased 3.89 times i......
需求是生产结构形成的决定性因素,也是畜种结构调整的决定性因素。因此,本文以内蒙古自治区哲里木盟为研究对象,从不同角度对区域......
