Wilderness Navigation, Finding Your Way Using Map, Compass, Altimeter & GPS, 3rd Edition, Mountaineers Books, Bob Burns, Mike Burns,Active outdoor pursuits and activities,Sports and Active outdoor recreation, navigation; GPS; compass; maps; green trails; national parks; lost; outdor education; wilderness school; outward bound; NOLS; trails,, , United States, en-UShttps://www.mountaineers.org/booksnavigation; GPS; compass; maps; green trails; national parks; lost; outdor education; wilderness school; outward bound; NOLS; trails, [BLURB],[CITY],,books, ebooks, biblet, Book2look