Otterby, D. E.Hutjens, M. F.Wayne, Ralph W.Donker, J. D.2019-09-182019-09-181972https://hdl.handle.net/11299/2068251 online resource (PDF, 2 pages)This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.enUsing urea as a protein substitute in the dairy ration (Revised 1972)Report