Peter Roman Books

The Mona Lisa sacrifice

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"For thousands of years, Cross has wandered the earth, a mortal soul trapped in the undying body left behind by Christ. He's been a thief, a con man, a soldier and a drunkard. He's fought as a slav...

The Dead Hamlets

By Peter Roman, Cluley, Ray

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Something is rotten in the court of the faerie queen. A deadly spirit is killing off the faerie, and it has mysterious ties to Shakespeare's play, Hamlet. The only one who can stop it is the immort...

People s Power

By Peter Roman

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People s Power

By Peter Roman

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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.