http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
New general Catalogue of double stars within 120° of the North Pole
Aitken, Robert Grant: New general Catalogue of double stars within -- 120° of the North Pole. Vol. 1. 2. -- Washington: Carnegie Inst. 1932. -- 4° (Carnegie Institution of Washington. Publication. 417.) -- [32. 36409 -- BZD
Carnegie Institution of Washington. Publication. 417