Books by Robert Bailey Elwood:
Books in the extended shelves:
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Elwood, Robert Bailey, 1912-: Changes in technology and labor requirements in live-stock production: poultry (Washington, 1941), also by George Alden Sallee, William Anton Newman, Arthur Armington Lewis, United States. Works project administration, and United States. Bureau of Agricultural Economics (page images at HathiTrust)
Find more by Robert Bailey Elwood at your library, or elsewhere.