EN中文
Regional Differentiation Characteristics and Environmental Causes of Elderly Population in China based on County Scale
Xu Xin, Zhao Yuan, Zhang Xinlin, Zeng Tonggang, Xia Siyou
SCIENTIA GEOGRAPHICA SINICA . 2018, (9): 1449 -1457 .  DOI: 10.13249/j.cnki.sgs.2018.09.007