Jon Allen Books

Simple Magic Tricks
Simple Magic Tricks

By Jon Allen

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Drawing Geometry
Drawing Geometry

By Keith Critchlow, Jon Allen

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The Simple Magic Tricks Set
The Simple Magic Tricks Set

By Jon Allen

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The Whole Question of Health
Tripping Through Time
Simple magic tricks
Simple magic tricks

By Jon Allen

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Presents instructions for over seventy simple magic tricks and stunts using everyday objects.

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Not for Attribution
Not for Attribution

By Jon. L. Allen, Jon Allen

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Making Geometry
Making Geometry

By Jon Allen

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Handbook of Mentalization Based Treatment
Heaven of Hell
Heaven of Hell

By Jon F. Allen

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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.

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