http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
National Advisory Committee for Aeronautics.
Reprints of papers originally issued as Advance restricted report, Advance confidential report, Restricted bulletin or Confidential bulletin.
Each [no.] has also a distinctive title.
Prepared at the Langley Memorial Aeronautical Research Laboratory, Langley Field, Va.