Valjeanne Jeffers Books

AN IMMORTAL JOURNEY CONTINUES ... After a century Karla and Joseph are reunited and discover that they are werewolves - only to be marked for death by the sorcerer Tehotep. Escaping into the Time o...

Immortal III

By Valjeanne Jeffers

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Immortal IV Collision of Worlds

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The thrilling and seductive conclusion to the Immortal saga! "The New World awoke to a roaring wind, light blazed from the mirror—swallowing the planet—a churning, savage vortex. Tundra's inhabitan...

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.