Grant Blackwood Books

Tom Clancy under fire

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"On a routine intelligence gathering mission in Tehran, Jack Ryan, Jr., has lunch with his oldest friend, Seth Gregory, an engineer overseeing a transcontinental railway project. As they part, Seth...

Tom Clancy duty and honor

By Grant Blackwood

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Tom Clancy Duty Honor Exp

By Grant Blackwood

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The End of Enemies

By Grant Blackwood

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Tom Clancy Under Fire

By Grant Blackwood

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Jack Ryan Jr. stands alone against powerful enemies in this thrilling novel in Tom Clancy’s #1 New York Times bestselling series. On a mission in Tehran, Jack Ryan, Jr., meets his oldest friend,...

AN Echo of War

By Grant Blackwood

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Spartan Gold

By Clive Cussler

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Lost Empire

By Clive Cussler

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The Kingdom

By Clive Cussler

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Spartan Gold

By Clive Cussler

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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.