Portable agricultural engines: extract from "Catechism of the steam engine." [New introduction by C. Airam.] - Bourne, John, C. E. (Leeds, Eng., Turntable Enterprises, 1972)
Facsimile reprint of an extract form "Catechism of the steam engine," 12th ed., London, 1868.
Mode of access: Internet.
Keywords: Steam-engines; Agricultural machinery; Agricultural machinery; Steam-engines.