http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 online resource (2 volumes): illustrations, color, text file, PDF.
vol. 1. Fundamentals. -- vol. 2. Applications
9783319568447 (electronic book ; volume 1)
9783319568478 (electronic book ; volume 2)