LEES, H A note on the copper-retaining power of a humic acid from peat soil. [electronic resource] - The Biochemical journal Apr 1950 - 450-1 p. digital Publication Type: Journal Article ISSN: 1470-8728 Standard No.: 10.1042/bj0460450 doi Subjects--Topical Terms: CopperHumic SubstancesSoil