Glenn Simpson Books

Crime in Progress

By Glenn Simpson, Peter Fritsch

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Crime in Progress

By Glenn Simpson, Peter Fritsch

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Crime in Progress

By Glenn Simpson, Peter Fritsch

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Crime in Progress

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#1 NEW YORK TIMES BESTSELLER • “I’ve read kind of all the books on this subject . . . and this is the one you want to read.”—Rachel Maddow Before Ukraine, before i...

Drug Free Life

By Glenn Simpson

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Peace Love and Happiness a Handbook for Living in a United World Government

By Glenn Simpson

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Guide for Affiliation

By Glenn Simpson

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Drug Free Life

By Glenn Simpson

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Independent Energy

By Glenn Simpson

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Independent Energy

By Glenn Simpson

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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.