Henry Christopher Books

Vengeance unbound

By Henry Christopher

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College credit by examination

By Henry Christopher Allan

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The Latimers

By Henry Christopher McCook

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Vengeance unbound

By Henry Christopher

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There are some folk who brand Russell Dane a coward - some believe him to be a murderer. And Dane has many more who want him dead: the man he should have fought in a duel; his own uncle; the town t...

Triple No. 21

By Tobey Niller, Sarah A. Chavez, Henry Christopher

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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.