PN C04616-09-1987 Water and waste water Special tests for sediments Determination of the specific nitrate reductases activity of the microorganisms occuring in the denitrifying reactors by the spectrophotometric method
1987PN C04616-09-1987 Water and waste water Special tests for sediments Determination of the specific nitrate reductases activity of the microorganisms occuring in the denitrifying reactors by the spectrophotometric method