Chris Archer Books

Since Elena's 13th birthday she has been having strange visions. It starts with small things like what the weather will be like but soon her visions become scarier. Jack, Ethan and Ashley recognize...

Pyrates the Secret City 1 Read 180 Stage A A Mysterious Map. an Underground Adventure.

By Chris Archer

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The secret city

By Chris Archer

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"A mysterious map. An underground adventure."

Eye of eternity

By Chris Archer

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"A priceless diamond. A growing danger."

Dead man's chest

By Chris Archer

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"Dead men tell no tales. They are close to the treasure...but closer to getting caught..."

The Last Clue Pyrates 4

By Chris Archer

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Alien Terror

By Chris Archer

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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.