Germany's Wintershall joins Patagonia's Vaca Muerta shale gas and oil rush
Germany's Wintershall joins Patagonia's Vaca Muerta shale gas and oil rush
http://en.mercopress.com/2014/01/08/germany-s-wintershall-joins-patagonia-s-vaca-muerta-shale-gas-and-oil-rush