Jen Frederick Books

Last Hope

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In the explosive new Hitman novel from the bestselling authors of Last Kiss and Last Hit a jungle mercenary and a female target find love on the run...Mendoza: I grew up in the slums and lost every...

Seoulmates

By Jen Frederick

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A Korean-American adoptee fights to be with the one she loves while coming to terms with her new identity in this enthralling romantic drama and sequel to Heart and Seoul by USA Today bestselling a...

Undeclared

By Jen Frederick

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Revealed to Him

By Jen Frederick

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The Charlotte Chronicles

By Jen Frederick

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Sacked

By Jen Frederick

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Unrequited

By Jen Frederick

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Winter Donovan loves two things: her sister and her sister's ex boyfriend. She's spent her whole life doing the right thing except that one time, that night when Finn O'Malley looked hollowed out b...

Undressed

By Stella Bloom, Jen Frederick

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Unwritten

By Jen Frederick

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Sacked

By Jen Frederick

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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.