Nicholas Heller Books

Ogres Ogres Ogres A Feasting Frenzy from A to Z

By Nicholas Heller

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Goblins in Green

By Nicholas Heller

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Goblins in Green

By Nicholas Heller

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The front hall carpet

By Nicholas Heller

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A youngster lives in a house where a blue river flows in the front hall, a grassy green field covers the dining room, and a maze traps night monsters in the bedroom.

The front hall carpet

By Nicholas Heller

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A youngster lives in a house where a blue river flows in the front hall, a grassy green field covers the dining room, and a maze traps night monsters in the bedroom.

Fish stories

By Nicholas Heller

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With a wizard helping him, a young man's fishing trips bring nothing but trouble.

Fish stories

By Nicholas Heller

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With a wizard helping him, a young man's fishing trips bring nothing but trouble.

The monster in the cave

By Nicholas Heller

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Even though his parents and older brother insist that monsters are not real, Tobias hunts for a special Christmas gift for the monster who lives in the cave.

The monster in the cave

By Nicholas Heller

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Even though his parents and older brother insist that monsters are not real, Tobias hunts for a special Christmas gift for the monster who lives in the cave.

Happy birthday, Moe Dog

By Nicholas Heller

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All the letters that spell Happy Birthday help Moe Dog enjoy his birthday.

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.