山东历史时期冷暖旱涝状况分析
郑景云, 郑斯中
AN ANALYSIS ON COLD/WARM AND DRY/WET IN SHANDONG PROVINCE DURING HISTORICAL TIMES
Zheng Jingyun, Zheng Sizhong
地理学报 . 1993, (4): 348 -357 .  DOI: 10.11821/xb199304006