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  1. By: University of Illinois at Urbana-Champaign. Cooperative Extension Service in Agriculture and Home Economics. - University of Illinois (Urbana-Champaign campus). Department of Agricultural Economics. - University of Illinois (Urbana-Champaign campus). Extension Service in Agriculture and Home Economics. - University of Illinois (Urbana-Champaign campus). Cooperative Extension Service.
    Publication info: Urbana, Cooperative Extension Service, University of Illinois at Urbana-Champaign,
    Holding Institution: University Library, University of Illinois Urbana Champaign