Acta Agrestia Sinica
Study on the Diet Composition of Grazing Sheep in the Agro-pastoral Transition Zone of North China
LIU Gui-he, GE jian, LI jun, LIU Chun-yang, ZHANG Ying-jun, WANG Shi-ping
Acta Agrestia Sinica . 2017, (4): 743 -748 .  DOI: 10.11733/j.issn.1007-0435.2017.04.008