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Ecological Chemistry and Engineering. A > 2008 > Vol. 15, nr 7 > 623-632
Proceedings of ECOpole > 2007 > Vol. 1, No. 1/2 > 103--108
Ecological Chemistry and Engineering. A > 2008 > Vol. 15, nr 7 > 623-632
Proceedings of ECOpole > 2007 > Vol. 1, No. 1/2 > 103--108