Ponizovsky, Alexander A Copper activity in soil solutions of calcareous soils. [electronic resource] - Environmental pollution (Barking, Essex : 1987) Jan 2007 - 1-6 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0269-7491 Standard No.: 10.1016/j.envpol.2006.04.010 doi Subjects--Topical Terms: Calcium--chemistryCarbonates--chemistryChemical PrecipitationCopper--chemistryHydrogen-Ion ConcentrationMagnesium--chemistryProtonsSodium--chemistrySoil--analysisSolutions--chemistry