1. Role of humic carrier substances in DDT movement through forest soil;Ballard,1971
2. Humic materials from an organic soil: A comparison of extractants and of properties of extracts;Hayes;Geoderma,1974
3. Frontal gel chromatography of a humic acid;Lindqvist;Acta Chem. Scand.,1974
4. The exhaustive alkaline cupric oxide oxidation of humic acid and fulvic acid;Neyroud,1974
5. Permanganate oxidation of methylated and unmethylated fulvic acids, humic acids and humin isolated from raw humus;Ogner;Acta Chem. Scand.,1973