Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
As the knowledge of the nutritional requirements for farm livestock increases, it becomes increasingly apparent that the practicing veterinarian has a large role in the application of nutrition to his practice. No other factor is more important in economic production of livestock and livestock products than is adequate nutrition.
Peterson, W. E.
"Nutritional Problems In Cattle,"
Iowa State University Veterinarian: Vol. 5
, Article 2.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol5/iss3/2