
Spatial Patterns Evolution and Classification of Population Aging in the Three Provinces of Northeast China Based on the County Scale
Liu Jian, Yang Qingshan, Zhang Yu, Liu Jie, Jiang Xiaojun
GEOGRAPHICAL SCIENCE ›› 2020, Vol. 40 ›› Issue (6) : 918-927.
Spatial Patterns Evolution and Classification of Population Aging in the Three Provinces of Northeast China Based on the County Scale
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