http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Kept up to date by weekly supplements and Report bulletins.
Issues for -<July 25, 1990> published by Prentice Hall; 1990-1992, by Maxwell Macmillan; Apr. 15, 1992- by Warren Gorham Lamont.