Dennis Janke Books

The Death of Superman (New Edition)

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THE EPIC EVENT THAT SHOCKED A NATION AND CHANGED SUPERMAN FOREVER!Doomsday. A creature with single-minded purpose of death and destruction. He has landed on Earth, laying waste to anything--and any...

Superman

By Louise Simonson, Dan Jurgens, Jerry Ordway, Gil Kane, Chris Batista, Dennis Janke, Roger Stern

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Superman

By Louise Simonson, Dan Jurgens, Kieron Dwyer, Denis Rodier, Dennis Janke, David Michelinie, Jon Bogdanove

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Superman

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G. I. Joe

By Ron Wagner, Herb Trimpe, Mike Zeck, Dennis Janke, Rod Whigham

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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.