Tom Johnson Books

The Mummy in Fact Fiction and Film

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"In 1922, when Howard Carter and Lord Carnarvon discovered the tomb of Tutankhamen, much of what was then known about mummies came from the writing of Greek historian Herodotus and from the paintin...

The Christopher Lee filmography

By Johnson Tom

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Censored Screams

By Tom Johnson

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The Mummy in Fact Fiction and Film

By Susan D. Cowie

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Microcomputer Based Input Output Modeling

By Daniel M. Otto

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Before We Topple Airmen Human and Humorous

By Tom Johnson

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Championship carving

By Tricia Veasey

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Peter Cushing

By Deborah Del Vecchio

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Imaginary Music

By Tom Johnson

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Symmetries

By Johnson Tom

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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.