STB 17.13.05-31-2014 Environmental protection and nature use. Analytical control and monitoring. Water quality. Determination of the concentration of sulpfides and hydrogen sulpfide by photometric method with dimethyl-p-phenylendiamine
2014STB 17.13.05-31-2014 Environmental protection and nature use. Analytical control and monitoring. Water quality. Determination of the concentration of sulpfides and hydrogen sulpfide by photometric method with dimethyl-p-phenylendiamine