DIN 38402-12:1985 German standard methods for the examination of water, waste water and sludge; general information (group A); sampling from barrages and lakes (A 12)
1985DIN 38402-12:1985-06 German standard methods for the examination of water, waste water and sludge; general information (group A); sampling from barrages and lakes (A 12)
1985DIN 38402-12:1985 German standard methods for the examination of water, waste water and sludge; general information (group A); sampling from barrages and lakes (A 12)