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WU Chengliang, , GAO Lan, YUAN Gongying, PENG Hua. Comparison of Measuring Methods of Contribution Ratio of Forestry Science and Technology Progress[J]. Journal of Beijing Forestry University (Social Science), 2007, 6(4): 56-59.
Citation: WU Chengliang, , GAO Lan, YUAN Gongying, PENG Hua. Comparison of Measuring Methods of Contribution Ratio of Forestry Science and Technology Progress[J]. Journal of Beijing Forestry University (Social Science), 2007, 6(4): 56-59.
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Comparison of Measuring Methods of Contribution Ratio of Forestry Science and Technology Progress

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