http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
report of working results, on a large scale, under the Gwynne-Harris patents, Nov., 1868-May, 1869
The Gwynne-Harris hydrocarbon gas process
Half title: The Gwynne-Harris hydrocarbon gas process. (American system.)
Microfilm. Ann Arbor, Mich., Xerox University Microfilms, 1974. 1 reel. 35 mm. (American Culture Series, reel 622.25)