FGDC CSDGM (Content
Standard for Digital Geospatial Metadata) XML DTD
Publisher:Federal Geographic Data Committee(FGDC)
MD Version:v.2:1998 (FGDC-STD-001-1998 )
URL﹕http://www.fgdc.gov/metadata/fgdc-std-001-1998.dtd
EAD (Encoded Archival Description) SGML/XML
DTD
Publisher:The Library of Congress (LC) in partnership with the Society of
American Archivists.
MD Version:2002
URL:http://www.loc.gov/ead/ead2002a.html