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    • Case hay baler, 1923

    • Case hay baler, 1923

    • Farm Equipment; Agriculture; Iowa State University;

    • Three men working on a tractor-drawn Case hay baler in the foreground. A harvested hay field can be seen behind the baler. Residential housing across a gravel road is in the background.
    • University Photographs
    • Agricultural Research Bulletins nos. 157-166

    • Agricultural Research Bulletins nos. 157-166

    • Agriculture; Farm Crops; Soils; Dairy Industry; Agricultural Economics; Agricultural Engineering; Botany; Plant Pathology

    • Volume 13, Bulletins 157-166. (157) Winogradsky Spontaneous Culture Method for Determining Certain Soil Deficiencies; (158) Production of Gum by Certain Species of Rhizobium; (159) Bacteriology of Butter: V. Studies on the Microorganisms in...
    • IAHEES Research Bulletin
    • Agricultural Research Bulletins nos. 321-345

    • Agricultural Research Bulletins nos. 321-345

    • Agriculture; Agricultural Economics, Rural Sociology; Consumption Economics; Agricultural Engineering; Soils; Agronomy; Dairy Industry; Poultry Husbandry; Animal Husbandry; Rural Education; Statistics; Botany; Plant Pathology; Farm Crops; Animal...

    • Volume 27, Bulletins 321-345. (321) Proper Size and Location of Corn Stabilization Stocks; (322) Some Farm Family Gardens Pay in Dollars; (323) Cost, Distribution and Utilization of Farm Machinery in Iowa; (324) Adjusting Crop Acreages for War...
    • IAHEES Research Bulletin

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