Patrick H. T. Doyle Books

The Castle Tower Lighthouse Edgar Font s Hunt for a House to Haunt Adventure One

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In this summer vacation story, a grandfather and his two grandchildren, Audrey and Garrett, search for a house for him to live in after he dies. They discover an abandoned lighthouse inhabited by t...

The Fakersville Power Station Edgar Font s Hunt for a House to Haunt Adventure 2

By Patrick H.T. Doyle

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The Flint Island Treehouse Edgar Font s Hunt for a House to Haunt Adventure 3

By Patrick H.T. Doyle

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Next Rest Stop Earth

By Patrick H. T. Doyle

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Castle Tower Lighthouse

By Patrick H. T. Doyle

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Fakersville Power Station

By Patrick H. T. Doyle

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Flint Island Treehouse

By Patrick H. T. Doyle

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Playhouse of Phym

By Patrick H. T. Doyle

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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.