http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
the science and practice of multi-tiered systems of support
1 online resource (xxv, 740 pages): illustrations, some color, text file, PDF.
edited by Shane R. Jimerson, Matthew K. Burns, Amanda M. VanDerHeyden.