[Principal component analysis and cluster analysis of inorganic elements in Erodium stephanianum from different areas].
Yin
Haibo
H
Pharmaceutic of Liaoning University of Traditional Chinese Medicine, Dalian 116600, China. yhb0528@sina.com
Zhang
Nan
N
Luo
Hong
H
Han
Rongchun
R
Li
Guoyu
G