Biodiversity Heritage Library
By "Runge, Edward C. A. "
Soil productivity indexes for Illinois counties and soil associations /
By: Mausel, P. W. - Carmer, S. G. - Runge, Edward C. A.
Publication info: Urbana :University of Illinois at Urbana-Champaign, College of Agriculture, Agricultural Experiment Station,1975.
Holding Institution: University Library, University of Illinois Urbana Champaign