/library/taxonomy/term/1051/all en /library/find/maps/ntdb <p>The <cite>National Topographic Data Base</cite> contains detailed large scale mapping (1:50 000 and 1:250 000 scales) of Canada showing hydrography, contours, vegetation, roads, rail network, electric power network, designated areas, land forms, wetlands, and manmade features. Data is available in vector formats that are supported by ArcGIS and ArcView.</p> <p><img alt="Sample image of NTDB dataset" height="299" width="400" style="height: 299px; width: 400px;" class="file-original " src="/library/files/library/images/ntdbsample.jpg" /><br />  </p> Thu, 01 Dec 2011 17:29:43 +0000 gregory.houston@mcgill.ca 4902 at /library