Acta Agrestia Sinica
A Cost-Benefit Analysis of Cultivating Forage to Raise Dairy Cattle in Saibei Precinct,Zhangjiakou City
LIU Yu-jie, LI Xiang-lin, HE Feng
. 2008, (3): 283 -288 .  DOI: 10.11733/j.issn.1007-0435.2008.03.014