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http://www.qgis.org/

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http://www.openoffice.org/el/http://www.youtube.com/watch?v=8eImvv73al8http://hub.qgis.org/projects/quantum-gis/wiki/How_do_I_do_that_in_QGIShttp://download.osgeo.org/qgis/doc/manual/qgis-1.0.0_a-gentle-gis-introduction_en.pdfhttp://www.qgis.org/en/documentation/manuals.html