Johan Grenier Books

Pathfinder Adventure Path: Mummy'S Mask Part 2 - Empty Graves

By Crystal Fraiser, Robert Lazzaretti, Amber E. Scott, Rob McCreary, Joe Wilson, Jason Juta, Thurston Hillman, Kieran Yanner, Ekaterina Burmak, Will McCardell, Crystal Frasier, Paizo Staff, Tyler Jacobson, Miguel Regodn Harkness, Roberto Pitturru, Florian Stitz, Maichol Quinto, Ben Wootten, Filip Burburan, Johan Grenier, Audrey Hotte, Antonie Rol, Tatiana Vetrova

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Chapter 2: "Empty Graves" By Crystal Frasier Following the opening of its necropolis, the city of Wati is overrun by hordes of the unquiet dead. The heroes must once more brave the abandoned street...

Slave Trenches of Hakotep

By Michael Kortes, Paizo Staff, Adam Daigle, Tim Hitchcock

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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.