Nong ye ji xie xue/. Xia. Nong ye ji xie xue/. Shang. Nong ye ji xie xue gai lun/ Nong ye ji xie hua Nong ye ji xie- xiao hao liang Nong ye jing ji xue/ Gong ye xin li xue/ Nong ye ji xie/ Dian ji ji xie/. Xia. Gong ye hui ji xue/