John Blundell Books

Ayn Rand Female Force

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Recounts in graphic novel format the life and career of controversial American writer and philospher Ayn Rand, best known for her novel "Atlas Shrugged," whose distinctive views on economics and so...

Remembering Margaret Thatcher

By John Blundell

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Remembering Margaret Thatcher

By John Blundell

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Remembering Margaret Thatcher

By John Blundell

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Female Force Women of Europe

By Michael Frizell

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Physiological psychology

By J. E. Blundell

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Physiological Psychology

By John Blundell

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Physiological Psychology

By John Blundell

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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.