Gary Jansen Books

Where Angels Walk

By Joan Wester Anderson, Gary Jansen

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Remember Us with Smiles

By Barbara Bongini, Grace Jansen, Gary Jansen

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In this remarkable true story, the haunting of a Long Island household forces a respected writer and editor to reevaluate the mysteries of life and death as he struggles with the frightening truths...

Activites Paranormales Esprits Bienvaillants

By Gary Jansen

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Guardian Angel Baby Blessing Kit

By Gary Jansen

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Life Everlasting

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The time-honored practices in this inspiring book will guide you in unlocking the power of Catholic devotions— prayers, meditations, and even very simple, small actions you can take right now that...

The Infernos of Dante and Dan Brown

By Gary Jansen

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A terrific companion to the new Dan Brown movie, Inferno! Take an extraordinary journey into the signs and symbols behind Dan Brown’s latest Robert Langdon thriller.Just in time for the block...

Holy Ghosts

By Gary Jansen

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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.