Nicholas Heller Books

When the giant in a painting in his grandmother's living room comes alive and walks out of the house, Evan goes with her to visit the artist and get the giant back into the painting.

The giant

By Nicholas Heller

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When the giant in a painting in his grandmother's living room comes alive and walks out of the house, Evan goes with her to visit the artist and get the giant back into the painting.

Ogres! ogres! ogres!

By Nicholas Heller

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The letters of the alphabet are represented by an assortment of ogres devouring all sorts of foods.

Ogres! ogres! ogres!

By Nicholas Heller

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The letters of the alphabet are represented by an assortment of ogres devouring all sorts of foods.

Goblins in Green

By Nicholas Heller

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Histoires de poissons

By Nicholas Heller

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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.