北方农牧交错带界线的变迁及其驱动力研究进展.

Autor: 石晓丽1,2 hnushixiaoli@163.com, 史文娇3,4 shiwj@lreis.ac.cn
Zdroj: Transactions of the Chinese Society of Agricultural Engineering. 2019, Vol. 35 Issue 18, p1-11. 11p.
Databáze: Academic Search Ultimate