Acta Agrestia Sinica
Analysis of Constrains and Management Strategy for Animal Production in Grassland of Northern China
LI Qing-feng, David, MICHALK, CHEN Liang, ZHANG Ping, TONG Shao-min
. 2003, (2): 178 -182 .  DOI: 10.11733/j.issn.1007-0435.2003.02.015