http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Scientific and technical societies of the United States and Canada
Scientific and technical societies of the United States
National Academy of Sciences - National Research Council
comp. by The Library National Academy of Sciences, National Research Council. Pt. 2, Scientific and technical societies of Canada / comp. by John R. Kohr.