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Polish Journal of Soil Science > 2009 > 42 > 1 > 1-14
Polish Journal of Soil Science > 2008 > 41 > 2 > 119-126
Polish Journal of Soil Science > 2009 > 42 > 1 > 1-14
Polish Journal of Soil Science > 2008 > 41 > 2 > 119-126