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Heat energy and fuels: pyrometry, combustion, analysis of fuels and manufacture of charcoal, coke and fuel gases. Translated by Oskar Nagel (1908)
Jüptner von Jonstorff, Hanns, Freiherr, 1853- · New York McGraw · leaf 220
Figs. 44-47. — Pile Retort Oven. … Figs. 48-52. —Ovens with Horizontal Retorts.Fuel · Heat
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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