John Montroll Books

3D Origami Antidiamonds
3D Origami Antidiamonds

By John Montroll

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Batman Origami
Batman Origami

By Min Sung Ku, John Montroll

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Superman Origami
Superman Origami

By Min Sung Ku, John Montroll

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Wonder Woman Origami
Justice League Origami
Batman Origami
Superman Origami
Superman Origami

By Min Sung Ku, Joe Shuster, John Montroll, Jerry Siegel

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Superman Origami models, designed by internationally renowned origami master John Montroll, are guaranteed to amaze.

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DC Origami
DC Origami

By Min Sung Ku, John Montroll

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DC Super Heroes Origami
Easy Origami Polar Animals
Easy Origami Polar Animals

By John Montroll

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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.

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