http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
2nd World Conference on Photovoltaic Solar Energy Conversion Viena, Austria 6-10 jul 1998
European Comission. Joint Research Centre
Vol II, xxiii, 1187-2443 p. grafs., il.;