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<http://webisa.webdatacommons.org/13360650>	<http://www.w3.org/ns/prov#value>	"Advanced GPS Instructor: Mike Popoloski, Mapco, Inc.Intended Audience: Current Trimble Terrasync and Pathfinder users, as well as anyone who is interested in learning about this technology.GPS is a widely used technology for collecting locational data for a GIS. Unfortunately many misconceptions exist about this technology and substantial errors are introduced into datasets as a result." .
<http://webisa.webdatacommons.org/prov/265466639>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/13360650> .