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Ecological Chemistry and Engineering. S > 2008 > Vol. 15, nr 4 > 587-593
Ecological Chemistry and Engineering. S > 2008 > Vol. 15, nr 1 > 95-102
Proceedings of ECOpole > 2007 > Vol. 1, No. 1/2 > 169--173
Proceedings of ECOpole > 2007 > Vol. 1, No. 1/2 > 137--140