Duncan Rouleau Books

Marvel Holiday Digest

By Shaenon Garrity, Takeshi Miyazawa, Roberto Aguirre Sacasa, Mike Carey, Duncan Rouleau, Tom DeFalco, Mike Perkins, Reilly Brown, Jeff Parker, Roger Cruz, Roger Langridge

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Superman

By Mark Schultz, Peter David, Joe Kelly, Jeph Loeb, Joe Casey

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Collects the entire saga of Our Worlds at War, in which Superman and Earth's mightiest heroes face the ultimate destructive force, Imperiex, to stop it from destroying the universe in order to rema...

Blue Beetle.

By John Rogers, J. Torres, Rafael Albuqerque

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Jaime has his hands full when he learns the scarab's alien owners are planning to invade Earth -- and no one will believe him! Guest-starring Green Lantern Guy Gardner and the Teen Titans while fac...

Metal men

By Duncan Rouleau

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Gold, Platina, Mercury, Iron, Lead, Tin and Copper are the amazing androids who combine their unique abilities--and clashing personalities--to fight for justice under the watchful eye of their crea...

Metal Men SC

By Duncan Rouleau

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Action Comics: 80 Years of Superman Deluxe Edition

By Various

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Action Comics is the longest-running continually published comic book in history, and it's the series that launched the superhero genre with the introduction of Superman in 1938. DC Entertainment i...

Ben 10 comic books

By Duncan Rouleau

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Ben Tennyson, a 10-year-old kid who proves that anyone can be a hero! Dr Amino is creating mutant creatures to take over Washington DC and there is only one person who can save the city.

Blue Beetle 2

By Rogers John Giffen Keith

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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.