William H. Armstrong Books

Through Troubled Waters

By William H. Armstrong

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The MacLeod place

By William H. Armstrong

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An old Virginia farmer and his grandson fight to save their land in the Blue Ridge Mountains from being taken by the government for a system of parks and highways.

The MacLeod place

By William H. Armstrong

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An old Virginia farmer and his grandson fight to save their land in the Blue Ridge Mountains from being taken by the government for a system of parks and highways.

Pocket Guide to Study Tips Barron s Pocket Guides

By William H. Armstrong, W.H. Armstrong, George Ehrenhaft

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Sounder

By William H. Armstrong

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Angry and humiliated when his sharecropper father is jailed for stealing food for his family, a young black boy grows in courage and understanding by learning to read and through his relationship w...

Word Power in Five Easy Lessons

By William H. Armstrong

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Study tips

By William H. Armstrong

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A pocket guide to correct study tips

By William H. Armstrong

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Study tactics

By William H. Armstrong

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Sounder

By William H. Armstrong

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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.