Tom Hennigan Books

MRCS Core Modules

By Chris Chan, Lindsay Barker, Tom Hennigan, Andrew Williams

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MRCS System Modules

By Chris Chan, Lindsay Barker, Tom Hennigan, Andrew Williams

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Elementar Science

By William Zinke, Bodie Hodge, Tom Hennigan

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The Ecology Book

By Tom Hennigan, Jean Lightner

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"This book is designed to make an informative unit study on created symbioses crucial for life. Outdoor activities are intertwined so that families and students can actively study and participate i...

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.