1. The effect of isomorphous substitutions on the intensities of the (00l)reflections of mica-and chlorite-type structures:;Brown;Min. Mag.,1955
2. Bushnell, T. M. (1944) The story of Indiana soils: Purdue Univ. Agr. Expt. Sta., Special Circular 1, 52 pp.
3. Alteration of clay minerals by weathering in Wisconsin tills:;Droste;Bull. Geol. Soc. Amer.,1956
4. Radiocarbon dates and Pleistocene chronological problems in the Mississippi Valley region:;Horberg;J. Geol.,1955
5. Quantitative estimations of clay minerals by diffraction methods:;Johns;J. Sed. Petrol.,1954