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In this paper the medium scale resolution data of ASTER GDEM (Advanced Spaceborne Thermal Emission and Reflection Radiometer Global Digital Elevation Model) and SRTM (Shuttle Radar Topography Mission) data, which is the most significant space surveys of earth ever undertaken, are used to generate contour lines for the studied area of rugged terrain of Makkah, Saudi Arabia using PCI Geomatica 10.3...
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