European stocks pulled back at mid-day trading Friday, dragged by surging oil prices and concerns about U.S. economy. Strong crude oil prices of $74.72 a barrel hurt airline companies like Lufthansa and British Airways. Resource stocks like Rio Tinto and Anglo American also moved to the downside. Among European movers German supermarket chain Metro gained d 2.3% after it agreed to buy the German operations of Wal-Mart Stores Inc. U.K. insurance company Prudential dropped 2.9% due to a first-half loss for its internet banking operation, Egg. The German DAX 30 lost 0.2%, followed by the French CAC 40 and London FTSE 100 which also fell 0.2%.