Technical efficiency and its determinants in China's hog production[J]. TIAN Xu,SUN Fei-fei,ZHOU Ying-heng.Journal of Integrative Agriculture. 2015(06)
Technical efficiency and its determinants in China's hog production[J]. TIAN Xu,SUN Fei-fei,ZHOU Ying-heng.Journal of Integrative Agriculture. 2015(06)