. "Wet oxidation according to Nelson and Sommers (1996)" . "Nelson and Sommers (1996) in: Sparks DL (ed.). Soil Sci. Soc. Am. book series 5, part 3, pp 961-1010." . . . "OrgC_wc-cro3-nelson" . "OrgC_wc-cro3-nelso"@en . .