Polish Journal of Environmental Studies
Polish Journal of Environmental Studies > 2000 > 9 > 6 > 511-515
Polish Journal of Environmental Studies > 2007 > 16 > 4 > 571-578
Polish Journal of Environmental Studies > 2007 > 16 > 5 > 663-670
Polish Journal of Environmental Studies > 2000 > 9 > 6 > 511-515
Polish Journal of Environmental Studies > 2007 > 16 > 4 > 571-578
Polish Journal of Environmental Studies > 2007 > 16 > 5 > 663-670