Books by Hannah Marceline Hoar:
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Hoar, Hannah Marceline: The Coal Industry of the World; With Special Reference to International Trade in Coal (US Dept. of Commerce Trade Promotion Series #105; Washington: GPO, 1930) (page images at HathiTrust)
Additional books by Hannah Marceline Hoar in the extended shelves:
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Hoar, Hannah Marceline: Quebracho: the origin and growth of the industry and the significance of its control to the leather industry of the United States (Gov. Pr. Off., 1924), also by Wilbur J. Page (page images at HathiTrust)- Hoar, Hannah Marceline: Wattle culture : its development within the British Empire and the economic importance of growing wattle in the United States and adjacent territory (Gov. Pr. Off., 1924), also by Wilbur J. Page (page images at HathiTrust)
Find more by Hannah Marceline Hoar at your library, or elsewhere.