Faced with growing uncertainty about the global economic outlook, a clutch of key European business confidence surveys to be released this week are expected to underscore deepening unease among the 12-member eurozone's industry leaders about the prospects for the world economy in the run up to the end of the year. Germany's Ifo business survey for September, which is to be released Monday and is considered to be one of Europe's prime economic indicators is tipped to slip to 95.1 points in September from 95.3 in August and consequently setting the stage for the release of subdued industry sentiment reports for France and Italy later in the week. As well the European Commission is planning to release Thursday its business and consumer confidence surveys, both of which are also expected to reinforce the picture of growing worries among Europe's industry leaders about the performance of the world economy in the coming months. "It is going to be a close call" said Rainer Guntermann, senior European economist with the investment house Dresdner Kleinwort Wasserstein as business leaders in the eurozone's three biggest economies weigh up worries about higher oil prices and talk of softening growth against signs that recovery in the economy built around the euro remains on track. --MORE 2350 Local Time 2050 GMT