Browsing by Author "Halvorson, David A."
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Item Avian influenza -- a Minnesota cooperative control program (Revised 1989)(University of Minnesota. Agricultural Extension Service, 1989) Halvorson, David A.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.Item Marek's Disease Control(University of Minnesota. Agricultural Extension Service, 1980) Halvorson, David A.Item Marek's disease control (Revised 1985)(University of Minnesota. Agricultural Extension Service, 1985) Halvorson, David A.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.