Cite

Hu, Huanyong, 1901-. 胡焕庸, 1901-. 中华人民共和国人口分布, 密度图. [TIFF]. [Beijing] : Zhongguo di tu chu ban she ; [Shanghai] : Xin hua shu dian Shanghai fa xing suo fa xing, 1989.. https://catalog.princeton.edu/catalog/9931086333506421