EN中文
Temporal and Spatial Variations of the Drought in the Warm Half Year over Northern China
LIU Lihong, ZHAI Panmao, ZHENG Zhuguang, LIU Xiaoling
PROGRESS IN GEOGRAPHY . 2011, (11): 1380 -1386 .  DOI: 10.11820/dlkxjz.2011.11.007