Johnny Heller Books

Third Grade Angels
Horrible Harry and the Christmas surprise
Horrible Harry and the Christmas surprise

By Suzy Kline

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When their teacher ends up in the hospital, the members of class 2B find a way to include her in their holiday celebration.

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Marley Me Large Print
Marley Me Large Print

By John Grogan

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Horrible Harry and the Dungeon
The Chalk Box Kid
The Chalk Box Kid

By

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Wolf Shadows
Wolf Shadows

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Victory in the Pacific
Victory in the Pacific

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Ratification
Ratification

By Pauline Maier, Johnny Heller

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Strong Men Armed
Strong Men Armed

By Johnny Heller, Robert Leckie

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Overlord
Overlord

By Johnny Heller, Albert Marrin

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Related Articles from our Blog

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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