Exploration and Development Research Institute of the North China Oil Field
Journal of North China Institute of Aerospace Engineering
Journal of North China Institute of Science and Technology
Journal of North China Institute of Water Conservancy and Hydroelectric Power
North China Institute of Science and Technology
华北科技学院
华北科技学院土木工程系
华北科技学院机电工程系
North China Institute of Technology
North China Institute of Water Conservancy and Hydro Electric
North China Institute of Water Conservancy and Hydroelectric Power
华北水利水电学院；黄河流域水资源保护局
华北水利水电学院资源与环境学院
华北水利水电学院
华北水利水电学院研究生处
North China oil province
North China Institute of Electric Power
13 provinces in North China
Agriculture-animal husbandry ecotone of North China
agro-pastoral ecotone in North China
agro-pastoral transition zone of north china
Alluvial plain of north China
Amoxicillin-North China Pharm
application in north China