Title: Han Tang guan zhong zi ran zai hai de zheng fu ying dui ce lü4e yan jiu
Description: Ben shu yi Zhongguo han tang guan zhong di qu zi ran zai hai de zheng fu ying dui ce lüe wei yan jiu dui xiang, cong han tang shi qi guan zhong zi ran zai hai gai kuang, han tang zheng fu dui zi ran zai hai de ying dui cuo shi, zi ran zai hai yu zheng fu ying dui ce lüe zhi jian de hu dong guan xi, han tang huang zheng de fa zhan deng jiao du zhan kai lun shu, bu jin dui li jie Zhongguo han tang li shi ju you qi fa jia zhi, ye dui jin tian de fang zai, jiu zai gong zuo you jie jian yi yi.
Subjects: Natural disasters, History, Social conditions, Government policy
Places: China
Time periods: Han dynasty, 202 B.C.-220 A.D., Tang dynasty, 618-907, 221 B.C.-960 A.D.