Michael O Hearn Books

Spinosaurus vs giganotosaurus

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In this series, readers learn all about their favourite prehistoric beasts, and then grab a front row seat to see what it would be like to watch them battle for victory.

Spinosaurus vs giganotosaurus

By Michael O Hearn

Average: 0.00, 0 Ratings

In this series, readers learn all about their favourite prehistoric beasts, and then grab a front row seat to see what it would be like to watch them battle for victory.

The kids guide to monster trucks

By Michael O Hearn

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"Describes a wide variety of monster trucks, including history, design, and competitions"--Provided by publisher.

Ghosts vs. witches

By Michael O Hearn

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"Describes the features and abilities of ghosts and witches, and how they may battle each other in a fight"--

Sea monsters vs. dragons

By Michael O Hearn

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"Describes the features and abilities of sea monsters and dragons, and how they may battle each other in a fight"--Provided by publisher.

Allosaurus vs. Brachiosaurus

By Michael O Hearn

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"Describes the features of Allosaurus and Brachiosaurus, and how they may have battled each other in prehistoric times"--Provided by publisher.

Spinosaurus vs. Giganotosaurus

By Michael O Hearn

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"Describes the features of Spinosaurus and Giganotosaurus, and how they may have battled each other in prehistoric times"--Provided by publisher.

Tyrannosaurus rex vs. Velociraptor

By Michael O Hearn

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"Describes the features of Tyrannosaurus rex and Velociraptor, and how they may have battled each other in prehistoric times"--Provided by publisher.

Triceratops vs. Stegosaurus

By Michael O Hearn

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"Describes the features of Triceratops and Stegosaurus, and how they may have battled each other in prehistoric times"--Provided by publisher.

Dilosaurus vs. Ankylosaurus

By Michael O Hearn

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"Describes the features of Dilophosaurus and Ankylosaurus, and how they may have battled each other in prehistoric times"--Provided by publisher.

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.