Dennis Calero Books

X Factor Vol. 1

By Peter David, Ryan Sook, Dennis Calero

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X Factor Vol. 2

By Peter David, Ariel Olivetti, Roy Allen Martinez, Dennis Calero

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Civil War

By Fabian Nicieza, Staz Johnson, Peter David, Dennis Calero

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X Factor Vol. 2

By Peter David, Roy Allen Martinez, Dennis Calero

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Ray Bradbury s The martian chronicles

By Dennis Calero

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The Earthmen came by the handful, then the hundreds, then the millions. They swept aside the majestic, dying Martian civilization to build their homes, shopping malls, and cities. Mars began as a p...

Ray Bradbury's The martian chronicles

By Dennis Calero

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Batman

By Shane Davis, Charles Soule, Dennis Calero

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Kolchak The Night Stalker

By C. J. Henderson, Dennis Calero

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The Suit

By Written, Illustrated By Dennis Calero.

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When a corporate merger becomes a hostile takeover, a cutthroat businessman known only as the Suit must take down the competition before his company goes under.The Suit is a coolheaded, capable, an...

Masters of Horror

By Jeremy Haun, Ivan Brandon, Chris Ryall, Dennis Calero

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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.