Research ArticleOpen accessIn the keywordsEffects of Extractants on the Yields and Selected Chemical Characteristics of Humic Acids Isolated from Tropical Saprists PeatLee Jia Huey, Osumanu Haruna Ahmed, Nik Muhamad Ab. MajidAmerican Journal of Applied Sciences, Vol. 7, Issue 7 · 31 Jul 2010 · 7,503 accessesView PDFCite