John Montroll Books

Easy Christmas Origami

By John Montroll

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Origami Sea Life

By John Montroll

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In *Origami Sea Life*, John Montroll and Robert J. Lang have collaborated to produce a truly elegant work. The pages of this book contain some of the most creative origami published to date. Each p...

Dogs in Origami

By John Montroll

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Origami Stars

By John Montroll

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Meditative Origami

By John Montroll

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Origami Polyhedra Design

By John Montroll

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Origami Polyhedra Design

By John Montroll

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Easy Origami

By John Montroll

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Origami Polyhedra Design

By John Montroll

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Easy Origami Animals

By John Montroll

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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.