Cathy Gohlke Books

Saving Amelie

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Increasingly wary of her father's genetic research, Rachel Kramer has determined that this trip with him to Germany in 1939 will be her last. But a cryptic letter from an estranged friend, begging...

In the early days of WWII, American Claire Stewart smuggles five French Jewish children across the channel before the Nazis storm Paris, and brings them to her estranged aunt's Lake District estate...

Until we find home

By Cathy Gohlke

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The Medallion

By Cathy Gohlke

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The Medallion

By Cathy Gohlke

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Promise me This

By Cathy Gohlke

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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.