Title: Ningxia shui li xin zhi = Ningxia shuili xinzhi /
Publisher: Ningxia ren min chu ban she,
Year: 2004
Subjects: Water resources development China Ningxia Huizu Zizhiqu History.; Hydraulic engineering China Ningxia Huizu Zizhiqu History.; Irrigation China Ningxia Huizu Zizhiqu History.; Ningxia Huizu Zizhiqu (China) History.