Sally M. Walker Books

Investigating Matter
Investigating Matter

By Sally M. Walker

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Investigating Sound
Investigating Sound

By Sally M. Walker

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Written in Bone
Written in Bone

By Sally M. Walker, Greg Abbey

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Underground Fire
Underground Fire

By Sally M. Walker

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Underground Fire: Hope, Sacrifice, and Courage in the Cherry Mine Disaster
Underground Fire: Hope, Sacrifice, and Courage in the Cherry Mine Disaster

By Sally M. Walker

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A historic mine fire traps hundreds of men underground in a gripping work of narrative nonfiction meticulously researched and told by a master of the genre. It is November 13, 1909, and the coal mi...

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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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