Denise Downer Books

Spider-Man: Maximum Venom: Volume 1 (Marvel Spider-Man) (Screen Comix)

By Kevin Burke, Denise Downer, RH Disney, Merrill Hagan, Chris Wyatt, Marvel Animation (Firm)

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Marvel's Maximum Venom Screen Comix is a graphic novel-style retelling with full-color images and dialogue from the series! The epic story of Peter Parker's sophomore year is retold in the new Scre...

Tombstone Twins

By Otis Frampton, Denise Downer

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Soul mates

By Denise Downer

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In Underworld Elementary School, a school for kids who have died in peculiar ways, Dedbert is the butt of everyone's jokes because he flushed himself down the toilet--until a girl arrives who died...

Soul mates

By Denise Downer

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In Underworld Elementary School, a school for kids who have died in peculiar ways, Dedbert is the butt of everyone's jokes because he flushed himself down the toilet--until a girl arrives who died...

Tombstone Twins Package

By Otis Frampton, Denise Downer

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Tombstone Twins

By Otis Frampton, Denise Downer

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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.