ARTICLES: PDF OnlyALLOCATION OF CATION EXCHANGE CAPACITY TO SOIL FRACTIONS IN SEVEN SURFACE SOILS FROM PANAMA AND THE APPLICATION OF A CATION EXCHANGE FACTOR AS A WEATHERING INDEXMARTINI, J. A. Author Information Instituto Interamericano de Ciencias Agricolas de la OEA, Turrialba, Costa Rica1 Soil Science 109(5):p 324-331, May 1970. Buy © Williams & Wilkins 1970. All Rights Reserved.