Variation of Heavy Metal Enrichment Efficiency in Roadside Tree of Sophora japonica L. with Different Diameters at Breast Height von TANG Liqing, 唐丽清, QIU Erfa, 邱尔发, HAN Yuli, 韩玉丽, WANG Rongfen, 王荣芬

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Study on Distribution of heavy metals in Populus tomentosa tree trunk von WANG Rongfen, 王荣芬, QIU Erfa, 邱尔发, TANG Liqing, 唐丽清

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THE OPEN PORT SYSTEM IN NORTHEAST CHINA von 王荣芬 于国政

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THE　DEVELOPMENT　OF　THE　TUMEN　RIVER　AND　THE　ECONOMIC　GEOGRAPHICAL　BACKGROUND　OF　ITS　HINTERLAND von 王荣芬 李为

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