Evaluating social policies: principles and U.S. experience. Using randomized control designs in evaluating social sector programs in developing countries. AIDS and African development. Privatization: lessons from market economies. The costs and benefits of soil conservation: the farmer's viewpoint.
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详细
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1994/07/31
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出版
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17525
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1
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1
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2003/01/03
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The World Bank research observer 9 (2)
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job training