John Montroll Books

Easy Origami

By John Montroll

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Animal Origami for the Enthusiast

By John Montroll

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Easy Dollar Bill Origami Dover Origami Papercraft

By John Montroll

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Easy Origami Animals

By John Montroll

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DC Super Heroes Origami

By John Montroll

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What happens when you combine Batman, Superman, Wonder Woman, and the Justice League with the art of origami? Also included in the back of the book are 96 sheets of specially illustrated folding pa...

Origami Twelve Days of Christmas

By John Montroll

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Origami Symphony No. 5

By John Montroll

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Origami Symphony No. 5

By John Montroll

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Origami Symphony No. 6

By John Montroll

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Origami Symphony No. 6

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.