TY - JOUR TI - Potassium-calcium exchange in electropositive oxisols: description of exchange sites PY - 2003 AU - Alves, Marcelo Eduardo AU - Lavorenti, Arquimedes T2 - Australian Journal of Soil Research DO - 10.1071/sr03010 UR - https://doi.org/10.1071/sr03010 PP - Oxford VL - 41 IS - 8 SP - 1423-1438 ER -