@INBOOK {JUO:1981a, title = {Mineralogical characteristics of Alfisols and Ultisols}, author = {Juo, A. S. R. }, editor = {Theng, B. T. G. }, series = {New Zealand Society Soil Science}, year = {1981}, type = {Soils with variable Charge}, address = {Lower Hutt, N.Z}, }