@inbook {761, title = {The Hydrogen Ion Concentration Base Exchange Capacity and Sulphate Content of Soils}, note = {Copies of this are available in the Tree Ring Laboratory. Please contact the curator for more information. pcreasman@ltrr.arizona.edu}, keywords = {base exchange, concentration, hydrogen, soils, sulphate content}, author = {Katz, Morris and Atkinson, H.J. and Wyatt, F.A.} }