Margaret W. Carruthers Books

Land, Sea and Air: 3
Land, Sea and Air: 3

By Margaret Carruthers

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Land, Sea and Air
Land, Sea and Air

By Margaret Carruthers

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The Hubble Space Telescope
The Hubble Space Telescope

By Margaret W. Carruthers

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A comprehensive look at the Hubble Space Telescope which has, since 1990, collected information about our solar system, star clusters in the Milky Way galaxy, and even other galaxies as it orbits t...

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Watts Library: Tsunamis
Watts Library: Tsunamis

By Margaret W. Carruthers

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Perfectly suited for today's science curriculum, this series explores aspects of the wonders of earth science. Each book fully explains complex concepts such as erosion, the water cycle, and e...

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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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