Helen Fry Books

MI9
MI9

By Helen Fry

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Women s Voices
Women s Voices

By Helen Fry

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Tales From the Dark Continent
The The King s Most Loyal Enemy Aliens
The king's most loyal enemy aliens
Freuds war
Freuds war

By Helen P. Fry

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The thrilling story of the Freud family's escape from the Nazis in Austria and their exile in Britain.

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Denazification
Denazification

By Helen P. Fry

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German schoolboy British commando
The Jews of Plymouth
The Jews of Plymouth

By Helen Fry

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Inside Nuremberg Prison
Inside Nuremberg Prison

By Helen Fry

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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.

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