Beijing Central Engineering and Research Research Institute of Non -ferrous Metallurgical Industry
scientific research research results
late Early Cretaceous or early Late Cretaceous
late Early Cretaceous-early Late Cretaceous
Accounting Research achievements distribution Research personnel
Exploration Research Department of CNOOC Research Center
operations research [= operational research]
China Offshore Oil Research Center Bohai Research Institute
bottom of Cretaceous formation
Carboniferous-Cretaceous period
白垩世
白垩纪的
白垩
白垩系
白垩纪
早白垩世
储层
晚白垩世
赤山组
下白垩统
黑龙江
非海相
白垩纪〔系〕
上白垩统
白垩的
Cretaceous artesian basin
Cretaceous Artisan Basin CAB
Cretaceous detrital rocks
Cretaceous groundwater basin
Cretaceous Intrusive rocks