John Heubusch Books

The shroud conspiracy

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"In this intense thriller, a forensic anthropologist sets out to prove that the Shroud of Turin is a fake, but quickly discovers the opposite--and must race to stop the evil forces who want to use...

The Shroud Conspiracy

By John Heubusch

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The Shroud Conspiracy

By John Heubusch, Paul Boehmer

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The Second Coming

By John Heubusch

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Shroud Conspiracy

By John Heubusch

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The second coming

By John Heubusch

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"In this thrilling sequel to The Shroud Conspiracy, a child cloned from the blood on the Shroud of Turin has the potential to save the world--or destroy it for good. When a fallen angel is mistaken...

Second Coming

By John Heubusch

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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.