Brennan Martin Books

The stars and the stones

By Martin Brennan, Brennan Martin

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The stones of time

By Brennan Martin

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I saw it in the garden

By Brennan Martin

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From the joy of early spring to the return of Jack Frost, a young girl and her grandfather tend a garden filled with plants and the host of creatures that make a home there.

The hidden Maya

By Brennan Martin

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Talking to Truth an Intuition Workbook

By Brennan Martin, Jen Gold, Anika Spencer

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The Boyne Valley vision

By Brennan Martin

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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.