Polish Journal of Environmental Studies
Polish Journal of Environmental Studies > 2007 > 16 > 4 > 505-515
Polish Journal of Environmental Studies > 2008 > 17 > 1 > 163-167
Polish Journal of Environmental Studies > 2010 > 19 > 2 > 301-308
Polish Journal of Environmental Studies > 2010 > 19 > 2 > 429-433