1. Chlorite and hydroxy-interlayered vermiculite and smectite;Barnhisel,1989
2. Soils and Geomorphology;Birkeland,1999
3. Bulk density;Blake,1986
4. Heavy mineral ratios of Sangamon weathering profiles in Illinois;Brophy;Illinois State Geological Survey Circular,1959
5. Micromorphology of Alfisols;Bullock,1985