http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Structure and presentations -- Content and style -- Enquiries -- Replies and quotations -- Orders -- Payment -- Complaints and adjustments -- Credit -- Banking -- Agents and agencies -- Transportation and shipping -- Insurance -- Electronic correspondence -- Miscellaneous correspondence -- In-company communications -- Personnel appointments.