1. 2007-04-13 [1] [OSGeo-Announce] deegree day 2007: Call for Participa osgeo-ann Frank Warmerd 2. 2007-04-11 [1] [OSGeo-Announce] OSGeo Welcomes Sixteen Students for osgeo-ann Frank Warmerd 3. 2007-04-04 [1] [OSGeo-Announce] FOSS4G 2007 Call for Presentations osgeo-ann Frank Warmerd