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Pasture Productivity of Crested Wheatgrass as Influenced by Nitrogen Fertilization and Alfalfa
Rogler, George A., (1969)
Grazing and grass-silage feeding studies at the Northern Great Plains Dairy Station
Gaalaas, R. F., (1955)
Symposium on Impacts on Rural America of the Federal Water Pollution Control Act Amendments, P.L. 92-500
Christensen, Lee A., (1978)