Gary Barnum Books

Thor Epic Collection War of the Pantheons

By Stan Lee, Jim Shooter, Tom Defalco, Roger Stern

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Thor Epic Collection: The God Of Thunder

By Roy Thomas, Dann Thomas, Gary Barnum, Stan Lee, HERB TRIMPE, Gary Hartle, Tom DeFalco, Randall Frenz, Ron Frenz, Roachard Bennett

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If death be his destiny! When the High Evolutionary plans a new race of immortals in the Black Galaxy, Hercules and the Celestials play a part in a space-faring saga with major implications for Tho...

Thor Epic Collection A Kingdom Lost

By Bill Mantlo, Ralph Macchio, Mark Gruenwald, Doug Moench

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Thor Epic Collection

By Stan Lee, Gerry Conway

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Thor Epic Collection

By Stan Lee

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Thor Epic Collection

By Ron Frenz, Randall Frenz, Roy Thomas, Tom Defalco

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Hulk Visionaries

By Eric Fein, Gary Barnum, Peter David, Tom Field, Dale Keown

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Thor Epic Collection

By Stan Lee, Jack Kirby

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Thor Epic Collection

By Alan Zelenetz, Bob Hall, Steven Grant, Doug Moench

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Thor Epic Collection

By Stan Lee

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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.