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[J]. Journal of Northern Agriculture, 2010, (6): 95-95.
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[J]. Journal of Northern Agriculture, 2009, (2): 124-124.
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[J]. Journal of Northern Agriculture, 2008, (S1): 34-34.
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[J]. Journal of Northern Agriculture, 2008, (3): 92-92.
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[J]. Journal of Northern Agriculture, 2008, (2): 76-76.
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[J]. Journal of Northern Agriculture, 2008, (1): 54-54.
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[J]. Journal of Northern Agriculture, 2007, (2): 47-47.
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[J]. Journal of Northern Agriculture, 2007, (1): 122-122.
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[J]. Journal of Northern Agriculture, 2006, (1): 76-76.
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[J]. Journal of Northern Agriculture, 2006, (1): 77-77.
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[J]. Journal of Northern Agriculture, 2005, (B12): 177-177.
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