Books by Ronald Earle Johnson:
Books in the extended shelves:
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Johnson, Ronald Earle, 1895-: Poultry-ration costs and poultry-feed price ratios, 1924-45 ... (Washington, D.C., 1946), also by United States. Bureau of Agricultural Economics (page images at HathiTrust)
Find more by Ronald Earle Johnson at your library, or elsewhere.