评论:山东农村水利工作回顾与展望 Looking Back on Rural Water Conservancy Works in S…

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山东农村水利工作回顾与展望Looking Back on Rural Water Conservancy Works in Shandong Province and Its Prospect 山东是个农业大省,共有农业人口6 576万人,耕地面积692.4万hm2,1999年粮食产量达4 269万...

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