http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
pt.1 is Autoren; pt.2 is Register or Stichwort- und Titelregister; pt.3 (1975/76 only) is Nummern or Kurztitel und Bestellnummern
Published by Koch, Neff & Oetinger and Koehler & Volckmar.