T. J. Klune Books

The Consumption of Magic Tales From Verania

By TJ Klune

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How to be a normal person

By T. J. Klune

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Gustavo Tiberius is not normal. He knows this. Everyone in his small town of Abby, Oregon, knows this. He reads encyclopedias every night before bed. He has a pet ferret called Harry S. Truman. He...

Tell Me It s Real

By Jakky, TJ Klune

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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.

T. J. Klune Books

Who We Are

A Destiny of Dragons

The Consumption of Magic Tales From Verania

The Long and Winding Road

How to be a normal person

Ravensong

Crisped Sere

Wolfsong

Wolfsong

Tell Me It s Real

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

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