Christopher Hart Books

Manga for the Beginner

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Got manga? Christopher Hart’s got manga, and he wants to share it with all his millions of readers—especially the beginners. With Manga for the Beginner, anyone who can hold a pencil...

Draw Manga Chibi XTreme Art

By Christopher Hart

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Draw manga!

By Hart Christopher., Christopher Hart

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Provides basic shapes and other techniques of cartooning, followed by illustrated, step-by-step instructions for drawing cartoon villains, superheroes, manga characters, and more.

Draw Manga Villans XTreme Art

By Christopher Hart

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Draw Manga Monsters XTreme Art

By Christopher Hart

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Draw Mini Manga XTreme Art

By Christopher Hart

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Cartoon Cool

By Christopher Hart

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Drawing Dragons and Those Who Hunt Them

By Christopher Hart

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Christopher Hart's cartoon studio.

By Hart Christopher.

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Christopher Hart's animation studio.

By Hart Christopher.

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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.