Soil survey of Lac Qui Parle County, MinnesotaJ. Ambrose Elwell, Geoffrey Baldwin Bodman, E. A. Fieger, J. S. Hall, C. H. Hammer, P. R. McMiller, Harvey Theodore Petraborg, Reuben Marion Pinckney, W. W. Strike · First published 1929Open the Tome
Freezing points of soils at the moisture equivalentReuben Marion Pinckney · First published 1925Open the Tome
