Peter D. Riley Books

Materials
Materials

By Peter D. Riley

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Science and Life
Science and Life

By Peter D. Riley

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Light and Sound
Light and Sound

By Peter D. Riley

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Our solar system
Our solar system

By Peter D. Riley

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Survivor's science on an island
Survivor's science on an island

By Peter D. Riley

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Describes the islands of the world, explains why people go to islands, and shows what to do to survive in an emergency on an island.

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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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