Austria, Vienna, OPEC building, organisation crude oil-exporting countries,

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Keywords: 08/2009, 2, 2nd, architecture, area, austria, building, capital, central, channel, countries, crude, danube, economic, economy, europe, exporting, high, international, leopoldstadt, long, metropolis, modern, office, offices, oil, oil-exporting, opec, organisation, overview, recording, rise, shot, travel, vienna