Andrew K. Johnston Books

It Happened in Canada
It Happened in Canada

By Joan Johnston

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Earth from space
Earth from space

By Andrew K. Johnston

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Earth from space
Earth from space

By Andrew K. Johnston

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For orbiting satellites, no place on Earth is isolated. The Himalayas are as easy to photograph as Manhattan. While satellite images are important for science and technical needs, they can also be...

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Earth From Space
Earth From Space

By Andrew K. Johnson

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Time and navigation
Time and navigation

By Andrew K. Johnston

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"If you want to know where you are, you need a good clock. This surprising connection between time and place has been true for centuries and is now being explored in Time and Navigation: The Untold...

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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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