Achievements and Problems:Study on the Construction of Motor-pumped Wells in Hebei Province in the 1960s and 1970s
YANG Xue-xin,FAN Xiao-dong
Journal of Hebei University(Philosophy and Social Science) . 2020, (6): 45 -51 .  DOI: 10.3969/j.issn.1005-6378.2020.06.007