DIN 38402-1 E:2009 Draft Document - German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 1: Recording of analysis results (A 1)
2011DIN 38402-1:2011-09 German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 1: Recording of analysis results (A 1)
2011DIN 38402-1:2011 German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 1: Recording of analysis results (A 1)
1987DIN 38402-1:1987 German standard methods for the examination of water, waste water and sludge; general information (group A); recording of analysis results (A 1)