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Daqing Oilfield
02-20
Party history study and education socialism Daqing Oilfield
12-20
Wang Demin Peking university Daqing Oilfield Chinese Wang Shigui oil field
Party history study and education petroleum Daqing Daqing Oilfield PetroChina
12-16
Japanese army northeast Japan_History Daqing Oilfield World war ii
12-15
Northeast Japanese World war ii Daqing Oilfield
Japanese Northeast World war ii Daqing Oilfield