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中国城镇化的若干重大问题与未来总体战略构想[1]

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risk and saving in northern Nigeria

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秸秆利用途径的分析比较

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1-human health, environmental, and economic effects of pesiticide

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1-A New Conceptual Base for Food and Agricultural Policy

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1 new technology and their impact on agriculture

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1 life cycle assessment framework in agriculture on the farm lever

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migration unempolyment and development