@electronic{en.wikipedia.org, title = {Kalahari Desert - Wikipedia, the free encyclopedia}, url = {http://en.wikipedia.org/w/index.php?title=Kalahari_Desert&oldid=192886250#Sand_mining}, biburl = {https://puma.uni-kassel.de/url/bcf599082dcfda3bb8e54adc2e0c542f/hotho}, keywords = {fact mining sand wikipedia wrong}, added-at = {2010-02-25T16:20:05.000+0100}, description = {}, interhash = {bcf599082dcfda3bb8e54adc2e0c542f}, intrahash = {bcf599082dcfda3bb8e54adc2e0c542f} }