Thomas Macri Books

"Iron Man is having a bad day, and it's all because of the Mandarin! When his armor gets damaged in a battle with the villain, Tony must find a way to fix the suit and fight back!"--P. [4] of cover.

This is Wolverine

By Thomas Macri

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Meet and learn all about Wolverine.

The Avengers Assemble

By Illustrated By DBG

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NICK FURY AND S.H.I.E.L.D. are faced with a foe no single person can defeat. So Fury sets out to bring together Earth's Mightiest Heroes and form the Avengers! Join Iron Man, Captain America, Thor,...

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.