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harvey j hirning
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Sheep housing and equipment handbook
Harvey J. Hirning, Tim C. Faller · MidWest Plan Service, Agricultural and Biosystems Engineering Dept., Iowa State University
90 sayfa · 1993
Sheep / Housing / Equipment and supplies / Handbooks, manuals / Sheep Production
Drying grain in Illinois
Harvey J. Hirning · University of Illinois at Urbana-Champaign, College of Agriculture, Cooperative Extension Service
16 sayfa · 1974
Drying / Grain