Harry Turtledove Books

Ruled Britannia

By Harry Turtledove

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Days of Infamy: A Novel of Alternate History

By Harry Turtledove

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End of the Beginning: A Novel of Alternate History

By Harry Turtledove

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Supervolcano: Things Fall Apart

By Harry Turtledove

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New York Times bestselling author Harry Turtledove brings his post-apocalyptic disaster trilogy to a startling conclusion...An explosion of incalculable magnitude in Yellowstone Park propelled lava...

Supervolcano: Eruption

By Harry Turtledove

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Yellowstone National Park sits on a hotspot: a plume of molten rock coming up from deep inside the earth capable of volcanic eruptions far greater than any that have occurred in times past. It has...

Supervolcano: All Fall Down

By Harry Turtledove

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In the aftermath of the supervolcano’s eruption in Yellowstone Park, North America is covered in ash. Farmlands cannot produce food. Machinery has been rendered useless. Cities are no longer habita...

Redshift

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Worlds that weren't

By Harry Turtledove

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Ruled Britannia

By Harry Turtledove

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Flights

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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.