Comparison of Measuring Methods of Contribution Ratio of Forestry Science and Technology Progress

WU Chengliang; ; GAO Lan; YUAN Gongying; PENG Hua

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.

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.