Catherine Hanley Books

Louis

By Catherine Hanley

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The sins of the father

By Catherine Hanley

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The year is 1217, and England has been invaded. Much of the country is in the iron grip of Louis of France and his collaborators, and civil war rages as the forces of the boy king try to fight off...

War and Combat 1150 1270

By Catherine Hanley

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The bloody city

By Catherine Hanley

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North by Polaris

By Michael Oliver, Catherine Hanley, Good Wives And Warriors

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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.