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Polish Journal of Ecology > 2010 > 58 > 3
Polish Journal of Ecology > 2010 > 58 > 4
Polish Journal of Ecology > 2009 > 57 > 2 > 331-339
Polish Journal of Ecology > 2010 > 58 > 3
Polish Journal of Ecology > 2010 > 58 > 4
Polish Journal of Ecology > 2009 > 57 > 2 > 331-339