Jeff Hirsch Books

In the twenty-second century Glennora Morgan's father has been working on a project which will allow him to penetrate the Rift and retrieve Glennora's mother; but now that he has suceeded the Autho...

Magisterium

By Jeff Hirsch

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The Eleventh Plague

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Breakaway the 39 Clues Unstoppable Book 2

By Jeff Hirsch

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The Eleventh Plague

By Jeff Hirsch

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The darkest path

By Jeff Hirsch

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Since he was captured by members of the Glorious Path, a militant religious cult based on the teachings of a former soldier, fifteen-year-old Cal has served the Path in its brutal war with the rema...

The darkest path

By Jeff Hirsch

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Darkest Path

By Jeff Hirsch

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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.