A study of the construction times of the ancient cities in Ganjia Basin, Gansu Province, China

XIA Huan, ZHANG Dongju, WANG Qiang, WU Duo, DUAN Yanwu, CHEN Fahu

Journal of Geographical Sciences . 2020, (9): 1467 -1480 . DOI: 10.1007/s11442-020-1793-9