http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 online resource : illustrations, maps.
Pt. 1. (Including introductory comments and a classification)
Roberto Basilico ... [and others] ; translation by Ivana Micheli.
Hypogean archaeology : research and documentaiton of underground structures ; no. 1