1981DIN 38405-17:1981-03 German Standard Methods for the Analysis of Water, Waste Water and Sludge; Anions (Group D); Determination of Borate Ions (D 17)
1981DIN 38405-17:1981 German Standard Methods for the Analysis of Water, Waste Water and Sludge; Anions (Group D); Determination of Borate Ions (D 17)