Harry Turtledove Books

“[A] colossal and brilliant saga . . . [This novel] may be the strongest and most compelling since the opener, How Few Remain.”—Publishers Weekly (starred review) Seventy years have passed since th...

Return Engagement

By Harry Turtledove

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Drive to the East

By Harry Turtledove

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As World War II escalates, North America is faced with violence on all sides--Confederate attacks on northern cities, Canadian insurgents, and a Japanese assault on the Hawaiian islands--as, in the...

The Grapple

By Harry Turtledove

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It is 1943, the third summer of the new war between the Confederate States of America and the United States. CSA President Featherstone has miscalculated the North's resilience. In Ohio, where Conf...

Homeward Bound

By Harry Turtledove

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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.