%0 Journal Article %T Review of Survey activities 2011: Groundwater protection and the role of water supply companies %A Petersen %A J.D. %A J£¿rgensen %A L.F. %J Geological Survey of Denmark and Greenland Bulletin %D 2012 %I Geological Survey of Denmark and Greenland %K Geological Survey of Denmark and Greenland %K survey organisations %K current research %K Denmark %K Greenland %U http://www.geus.dk/publications/bull/nr26/nr26_49-52.pdf