Patrick Carman Books

El limite de los Montes Negros

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When she finds the key to a secret passageway leading out of the walled city of Bridewell, twelve-year-old Alexa realizes her lifelong wish to explore the mysterious forests and mountains that lie...

The Dark Hills Divide

By Carman Patrick

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The Dark Hills Divide

By Patrick Carman

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Beyond The Valley Of Thorns Mas Alla Del Valle De Espinas .

By Patrick Carman

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When 13-year-old Alexa embarks on a mysterious quest, she finds her old friends--Yipes the Little Man, Murphy the Squirrel, Odessa the wolf, and Squire the Hawk--have been designated to help her.

The Land of Elyon 3

By Patrick Carman

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Land of Elyon Boxed Set Land of Elyon

By Patrick Carman

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Stargazer

By Patrick Carman

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Into the Mist

By Patrick Carman

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Le Secret des collines interdites La contree d Elyon

By Patrick Carman

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Valley of Thorns

By Patrick Carman

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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.