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GPS Made Easy: Using Global Positioning Systems in the Outdoors (Fourth Edition Waas Revised) by Letham, Lawrence
Fourth Edition
Calgary, AB, Canada: Rocky Mountain Books, 2003. Fourth edition revised to reflect the increased accuracy provided ny the WAAS and EGNOS satellites, downloadable maps and PDAs with GPS receivers.. ISBN: 1894765486. Fourth Edition. Trade Paperback. New. GLOBAL POSITIONING SYSTEM ORIENTEERING OUTDOOR RECREATION SPORTS SKILLS TRANSPORTATION NAVIGATION TRAVEL ADVENTURE WAAS EGNOS.
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