http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Proceedings of the Clean Air Conference [1964]-1967
Proceedings of the ... annual conference of the National Smoke Abatement Society <1937>-
Vols. for (1937-1956) published by the society under its earlier name: National Smoke Abatement Society.