http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Published for the Royal Society at the University Press
Vols. 1-3 edited by H. W. Turnbull; v. 4 edited by J. F. Scott; vols. 5-7 edited by A. Rupert Hall and Laura Tilling.