Carol Ballard Books

What is an asthma attack
What is an asthma attack

By Carol Ballard

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What is my pulse
What is my pulse

By Carol Ballard

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Learn about how your heart, blood, and circulatory system work throughout your body.

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Why do I need glasses?
Why do I need glasses?

By Carol Ballard

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Looks at human vision, including how it works, what its purposes are, how some disorders affect the way people see, and how to maintain healthy eyes.

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What is an asthma attack?
What is an asthma attack?

By Carol Ballard

Average: 0.00, 0 Ratings

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What is my pulse?
What is my pulse?

By Carol Ballard

Average: 0.00, 0 Ratings

Learn about how your heart, blood, and circulatory system work throughout your body.

Read More

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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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