DIN 38402-11:1995 German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 11: Sampling of waste water (A 11)
2009DIN 38402-11:2009-02 German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 11: Sampling of waste water (A 11)
2009DIN 38402-11:2009 German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 11: Sampling of waste water (A 11)
1995DIN 38402-11:1995 German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 11: Sampling of waste water (A 11)