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1Yang li chu geng Han jia tian : wan Qing xi fang nong ye ke ji de ren shi chuan ru yu tui guang (1840-1911) = On the understanding and spreading of western agricultural science and...洋犁初耕汉家田 : 晚清西方农业科技的认识传入与推广(1840-1911) = On the understanding and spreading of western agricultural science and technology in China in the late Qing dynasty (1840-1911AD) /洋犁初耕汉家田 : 晚清西方农业科技的认识传入与推广(1840-1911) = On the understanding and spreading of western agricultural science and technology in China in the late Qing dynasty (1840-1911AD) /洋犁初耕汉家田 : 晚清西方农业科技的认识传入与推广(1840-1911) = On the understanding and spreading of western agricultural science and technology in China in the late Qing dynasty (1840-1911AD) /
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