John Montroll Books

Enchanting collection of 27 original models by origami master John Montroll. Ranging from simple to complex, the figures include 10 types of dragons as well as a wizard, ogre, unicorn, phoenix, and...

Origami birds

By John Montroll

Average: 0.00, 0 Ratings

Easy Origami

By John Montroll

Average: 0.00, 0 Ratings

Birds in Origami

By John Montroll

Average: 0.00, 0 Ratings

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.