http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
A study of Yerkes Observatory parallax photographs
HOPKINS,Mary Murray: -- The Field of 61 Cygni.A study of Yerkes -- Observatory parallax photographs.-New -- York 1915. -- (Contributions from the observatory of -- Columbia Univers. No.29.)
Contributions from the observatory of Columbia Univers. No.29