Lawrence Letham Books

Best Hikes With Children In Arizona
Best Hikes With Children In Arizona

By Lawrence Letham

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The newest addition to the Best Hikes with Children series (see page 27), this guide takes families beyond Arizona's traditional tourist spots to conifer forests, painted deserts, and everything in...

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GPS Made Easy : Using Global Positioning Systems In The Outdoors
GPS Made Easy : Using Global Positioning Systems In The Outdoors

By Lawrence Letham, Letham, Lawrence

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Keeping up with the newest technology, GPS Made Easy, 5th Edition, includes navigation in difficult weather (such as a whiteout), integrating hand-held GPS tools and data with computer programs (su...

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GPS Made Easy: Code Gps
GPS Made Easy: Code Gps

By Lawrence Letham, Letham, Lawrence

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The times leading up to Columbus' voyage to the New World in 1492 was an era of advances in navigation.

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What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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