明清时期嘉陵江流域水旱灾害时空分布特征
马强, 杨霄
Spatial and temporal distributions of floods and droughts in Jialing river basin in the Ming and Qing dynasties
MA Qiang, YANG Xiao
地理研究 . 2013, (2): 257 -265 .  DOI: 10.11821/yj2013020006