Lincoln, Neb. : Dept. of Agricultural Meteorology, Institute of Agriculture and Natural Resources, University of Nebraska--Lincoln; [Washington, D.C. : National Aeronautics and Space Administration?, 1990]
1990
Wischmeier, Walter H., 1911-
Washington, D.C. : Agricultural Research Service, U.S. Dept of Agriculture in cooperation with Purdue Agricultural Experiment Station, 1965.
1965