http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
volumes (loose-leaf) : illustrations ; 30 cm.
Volume 1. Soils section. Bituminuous section. -- volume 2. Cement section. Physical section. Asphalt section. -- volume 3. Chemical section. Structural section. Paint section. Certification section. Special procedures.