Mark David Books

Fold Your Own Paper Boats
Trouble at Minimal Farm
Cartooning for Kids
Cartooning for Kids

By Mark David

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Rachel to the rescue
Rachel to the rescue

By Ellen Frances

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By proving that the old church is an important piece of history, Rachel and her neighbor prevent its demolition and save it for the neighborhood After School Program.

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Millennium
Millennium

By Mark David

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The Coaching Illustrated
The Coaching Illustrated

By Mark David

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Again
Again

By Mark David

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Again
Again

By Mark David

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Scorched Earth
Scorched Earth

By David Mark

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Hypoxia in the Northern Gulf of Mexico

Related Articles from our Blog

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

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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