Richard F. Duwelius. Ground-water Modeling of Small Watersheds in the Coal-mining Region of Southwestern Indiana.
W.S. Gaddis and N.R. Shaffer. Sulfur Isotope Ratios in Indiana Sulfide Minerals.
William A. Gustin. Examination of a Popular Belief: Is There a Relationship Between Winter and Summer Temperatures?
Walter A. Hasenmueller, Louis V. Miller and Jimmy J. Johnson. An Estimate of Indiana's Coal Reserves that Comply with Current Sulfur Dioxide Emission Standards.