Walter Harris Books

To Catch a Rat

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The New Avengers embark on a deadly hunt to identify and destroy a traitor high up in the British Secret Service - a traitor known only as the White Rat.

Tafilet

By Walter Harris

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Morocco That Was

By Walter Harris

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From Batum To Baghdad

By Walter Harris

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Morocco That Was

By Walter Harris

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Droop

By Walter Harris

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Saliva

By Walter Harris

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From Batum to Baghdad

By Walter Harris

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From Batum to Baghdad

By Walter Harris

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The Fifth Horseman

By Walter Harris

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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.