CoupleOfKooks Books

Critical Role: Vox Machina Coloring Book

By Critical Critical Role, CoupleOfKooks, Others, Noah Hayes, Olivia Samson, Cait May, Featuring Characters Created By The Cast Of Critical Role, With Art By Olivia Sa Mson, CoupleOfKooks, Noah Hayes, Cait May

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Immerse yourself in some of the best moments from Critical Role’s celebrated Vox Machina campaign with a brand new coloring book!Vex, Vax, Percy, Grog, Scanlan, Pike, and Keyleth—as well as fan-fav...

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.