Brussels, 11/02/2000 (Agence Europe) - The European Commission has warned the Organisation of Oil Producing Countries (OPEC) that a further increase in oil prices, or even keeping them at the current high level, could have a negative impact on world economic growth due to inflationary pressures resulting from them. Over the past twelve months, prices of crude oil have increased by 150%, exceeding all predictions be experts. At the beginning of last week, the price of a barrel of oil even...