Free Trade and Haze Control: The Impact of Pilot Free Trade Zone Policy on Haze Pollution von Ji, Zhanheng, Zhu, Qianting

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Correction: Market-incentive environmental regulation and performance of new energy vehicle enterprises: evidence from the dual credit policy in China von Ji, Zhanheng, Zhu, Qianting

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Market-incentive environmental regulation and performance of new energy vehicle enterprises: evidence from the dual credit policy in China von Ji, Zhanheng, Zhu, Qianting

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Elevator control system von JI ZHANHENG

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Elevator control system von JI ZHANHENG

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Cub drencher for livestock breeding von JI ZHIGANG, LIU RONGWEN, SONG ZHANHENG

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Fixing device for livestock breeding von JI ZHIGANG, SONG ZHANHENG, LIU RONGWEN

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Livestock waste recycling device von JI ZHIGANG, SONG ZHANHENG

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Fodder feeding device for livestock -raising von WANG YANMEI, JI ZHIGANG, SONG ZHANHENG

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