Doug French Books

Investigating Maths with a Micro BBC B and BBC Master

By Doug French

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Verbal Workout For The New Gmat

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Math Workout For The New Gre Revised And Updated For The New Gre

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"...Completely updated for August 2011 changes to the GRE ; Hundreds of practice questions with answers and detailed explanations to help you understand every facet of each question ; Step-by-step...

Doug Frenchs Verbal Prep For The Accuplacer

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Doug Frenchs Verbal Prep For The Compass Exam

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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.