Title: Yi yao shang pin xue
Description: Ben shu fen zong lun he fen lun liang pian.Nei rong bao kuo:yi yao shang pin xue gai lun,Yi yao shang pin de xing zhi yu fen lei,Yi yao shang pin de zhi liang yu guan li,Yi yao shang pin de jing ying deng.
Subjects: Yao wu, Shang pin xue