http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
proceedings of the OECD Working Symposium on Long-Range Forecasting and Planning, Bellagio, Italy 27th October-2nd November 1968
Organizacja Współpracy Gospodarczej i Rozwoju
OECD Working Symposium on Long-Range Forecasting and Planning (1968 ; Bellagio).
Organisation for Economic Co-operation and Development