NF X31-090-5*NF EN ISO 12782-5:2012 Soil quality - Parameters for geochemical modelling of leaching and speciation of constituents in soils and soil materials - Part 5 : extraction of humic substances from aqueous samples
2012NF X31-090-5*NF EN ISO 12782-5:2012 Soil quality - Parameters for geochemical modelling of leaching and speciation of constituents in soils and soil materials - Part 5 : extraction of humic substances from aqueous samples