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Milk is poured into a bowl of cereal in an arranged photograph in Melbourne, Australia, on Friday, Feb. 18, 2011. Australia's parliament will call executives from supermarket operators including Woolworths Ltd., the nation's biggest retailer, and Wesfarmers Ltd. to query them on how lower milk prices are affecting the dairy industry. Photographer: Carla Gottgens/Bloomberg via Getty Images

Milk is poured into a bowl of cereal in an arranged photograph in Melbourne, Australia, on Friday, Feb. 18, 2011. Australia's parliament will call executives from supermarket operators including Woolworths Ltd., the nation's biggest retailer, and Wesfarmers Ltd. to query them on how lower milk prices are affecting the dairy industry. Photographer: Carla Gottgens/Bloomberg via Getty Images