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东北地区农业系统发展的阶段性特征[J]. 草业科学, 2012, 6(8): 1322-1326.
引用本文: 东北地区农业系统发展的阶段性特征[J]. 草业科学, 2012, 6(8): 1322-1326.
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Characteristics of agricultural system at different development stages in Northeastern China[J]. Pratacultural Science, 2012, 6(8): 1322-1326.
Citation: Characteristics of agricultural system at different development stages in Northeastern China[J]. Pratacultural Science, 2012, 6(8): 1322-1326.
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东北地区农业系统发展的阶段性特征

Characteristics of agricultural system at different development stages in Northeastern China

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