Polish Journal of Environmental Studies
Polish Journal of Environmental Studies > 2000 > 9 > 6 > 471-474
Polish Journal of Environmental Studies > 2009 > 18 > 4 > 665-672
Polish Journal of Environmental Studies > 2010 > 19 > 1 > 7-13
Polish Journal of Environmental Studies > 2000 > 9 > 6 > 471-474
Polish Journal of Environmental Studies > 2009 > 18 > 4 > 665-672
Polish Journal of Environmental Studies > 2010 > 19 > 1 > 7-13