http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Books in series in the United States, 1966-1975
original, reprinted, in-print, and out-of-print books, published or distributed in the U.S. in popular, scholarly, and professional series
[prepared by R. R. Bowker Company's Department of Bibliography, in collaboration with its Publication Systems Department].