DIN 38414-12:1986 German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); determination of phosphorus in sludges and sediments (S 12)
1986DIN 38414-12:1986 German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); determination of phosphorus in sludges and sediments (S 12)