http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
European Tribology Congress, London, 1973.
Institution of Mechanical Engineers (Great Britain)
published by Mechanical Engineering Publications for The Institution of Mechanical Engineers
organized and sponsored by the Tribology Group of The Institution of Mechanical Engineers and co-sponsored by The Royal Institute of Chemistry ... [et al.], London, 25-27 September 1973.