Ray Celestin Books

In a town jammed with voodoo and gangsters, a sense of intoxicating mystery often beckons from the back alleys. But when a real serial killer roams the sultry nights, even the corrupt cops can't se...

The Mobster s Lament

By Ray Celestin

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The Mobster s Lament

By Ray Celestin

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Mobsters Lament

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Dead man s blues

By Ray Celestin

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Chicago, 1928. In the stifling summer heat three disturbing events take place. A clique of city leaders is poisoned in a fancy hotel. A white gangster is found mutilated in an alleyway in the Black...

New Orleans Cinayetleri

By Ray Celestin

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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.