Christoffer Trossen Books

Classic Battletech Field Manual

By Loren L. Coleman, Christoffer Trossen

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The Complete Monstrous Wizards Compendium

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Handbook House Davion

By Christoffer Trossen

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Historical Operation Klondike Battletech Sourcebooks

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BattleTech

By Herbert A Beas II, Ilsa J Bick

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THE DAWN OF A NEW AGE... In the 25th century, humankind is locked in a seemingly endless cycle of warfare as each of the Great Houses seeks to expand their holdings at the cost of the others. But i...

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.