Paul Mendoza Books

Berserker Aliens

By Paul Mendoza, John Wagner, S. D. Perry

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Cosmic Test Tube

By Randall Fitzgerald

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ALIENS: THE ORIGINAL YEARS OMNIBUS VOL. 3

By John Wagner

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More tales of Alien horror! A team of soldiers must reclaim an overrun space station! Bug hunter extraordinaire Herk Mondo returns! Can pirates defeat Aliens with...a pig? An Alien stalks a religio...

Eyes That Smiled

By Paul Mendoza

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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.