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Instructed in English by Dr. Mike Wineland, Professor, Extension Specialist and Departmental Extension Leader (Retired), Poultry Department, North Carolina State University.
Instructed by Dr. Frank Mitloehner, Professor and Air Quality Specialist in Cooperative Extension, Department of Animal Science, University of California, Davis.
Instructed in English by Dr. Mike Hutjens, Extension Dairy Specialist (Retired), University of Illinois - Department of Animal Sciences.
Instructed in English by Fabian Bernal, M.S., P.A.S., Dairy Advisory Senior Manager, DeLaval Inc.
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