EN中文
周秦两汉时期农业灾害时空分布研究
卜风贤
Research on the Space-time Distribution of Agricultural Natural Disaster in Zhou, Qin, Western and Eastern Han Dynasties
BU Feng-xian
地理科学 . 2002, (4): 463 -467 .  DOI: 10.13249/j.cnki.sgs.2002.04.463