Open Source and Web GIS A GIS based Collaborative Portal approach For Oil & Gas Industry using a GIS Portal Tool Kit Jafrullah Mohammed GeoServer andOpen Spatial Data Infrastructure Mike Pumphrey Developing Software for Spatial Data Maintenance through Thick Client using Open Source GIS Perumal Chinnusamy, Glenn Kronschnabl Impact of Data Quality on Efficiency and Reliability of a Network Santosh Reddy, Sunil Kumar Impact of Data Quality on Efficiency and Reliability of a Network  (View Paper) Bala Subrahmanyam T.V, Santosh Patlolla, Sunil Kumar Kotagiri