![GPS / Geocaching / Hobbies / Navigation / Treasure hunt / Global Positioning System / Cache / Minnesota State Park Geocaching Challenge / Recreation / Outdoor recreation / Human behavior GPS / Geocaching / Hobbies / Navigation / Treasure hunt / Global Positioning System / Cache / Minnesota State Park Geocaching Challenge / Recreation / Outdoor recreation / Human behavior](https://www.pdfsearch.io/img/0015f57388908c6c9d19e919f8ae1dc3.jpg)
| Document Date: 2010-04-25 14:49:20 Open Document File Size: 3,26 MBShare Result on Facebook
City Portland / Tartu / Durham / / Company Duke University Press / DreamTime Publishing Inc. / Fulcrum Publishing / G & R Publishing / / Country Estonia / Tunisia / / Facility Institute of Paasikivi / / IndustryTerm web-page www.geopeitus.ee / high-tech treasure hunting game / / Organization Duke University / Estonian Science Foundation / Institute of Paasikivi / / Person Erik Sherman / Dave Ulmer / Jack W. Peters / Joel McNamara / Mike Dyer / Lisa Parks / Jeannette Cezanne / David J. Ulmer / / ProvinceOrState Oregon / / PublishedMedium The Essential Guide / / Technology Alpha / Teaching GPS Technology / GPS / / URL http /
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