Chris Marcus Books

Thor: The Dark World: Heroes Of Asgard

By Robert Rodat, CHRISTOPHER YOST, Chris Marcus, Cam Smith, Ronald Lim, Tomas Palacios, Stephen McFeely, Don Payne, Lee Duhig

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The Asgardian warrior continues his big-screen adventures in The Dark World as he battles to save Earth and all Nine Realms from a shadowy enemy that predates the universe itself. In the aftermath...

Big Silver Short

By Chris Marcus

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Many were stunned to see The Big Short and realize that there were a few savvy traders who saw the subprime crisis in advance, and used that knowledge to make a fortune in the financial markets. Sh...

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.