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Ecological Chemistry and Engineering. S > 2009 > Vol. 16, nr 2 > 221-235
Proceedings of ECOpole > 2007 > Vol. 1, No. 1/2 > 211--219
Ecological Chemistry and Engineering. S > 2009 > Vol. 16, nr 2 > 221-235
Proceedings of ECOpole > 2007 > Vol. 1, No. 1/2 > 211--219