Books by William Miller Barr:
Books in the extended shelves:
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Barr, William Miller: Combustion of coal and the prevention of smoke : being a practical catechism for engineers, firemen and all others interested in fuel economy and the suppression of smoke from stationary steam-boiler furnaces, and from locomotives (N.W. Henley, 1904) (page images at HathiTrust)
Find more by William Miller Barr at your library, or elsewhere.