{
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 "description": "Global Positioning System (GPS) satellite navigation validation marks are unique visible markers located at a number of public boat ramps and associated jetties, which mariners or owners of portable GPS units can use to validate their position and map datum settings.\n\nLicense: Creative Commons Attribution\n\nTags: GPS, Validation Mark\n\nContact: sharon.hu@transport.wa.gov.au",
 "summary": "",
 "title": "GPS Validation Mark (DOT-031)",
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