Comparative Study on Characteristics of Leaf Morphological Structure of Lespedeza Species in Different Altitudes of Hebei Xiaowutai Mountain
LI Jie,HE Xue-li,LI Jing-xia
Journal of Hebei University (Natural Science Edition) . 2007, (2): 184 -187 .  DOI: 10.3969/j.issn.1000-1565.2007.02.020