Mark Protosevich Books

Thor

By Loki, Anthony Hopkins, LLC Marvel Entertainment, J. Michael Straczynski, Copyright Collection (Library Of Congress), Patrick Doyle, Zack Stentz, Paramount Home Media Distribution, Paul Rubell, Marvel Studios, Natalie Portman, Kevin Feige, Jeremy Renner, Thor, Ashley Edward Miller, Kenneth Branagh, Don Payne, Paramount Pictures Corporation, (Norse Deity), Chris Hemsworth, Mark Protosevich, Haris Zambarloukos

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When The Arrogant Warrior Thor Is Banished To Earth From His Homeworld Of Asgard, He Must Fight To Reclaim His Lost Powers. Pursued By An Invasion Force Sent To Destroy Him, The Fallen God Of Thund...

I Am Legend

By Akiva Goldsman, Mark Protosevich

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Poseidon

By Mark Protosevich

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Thor

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ザ・セル

By Mark Protosevich

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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.