Michael R. McCarthy Books

Carlisle

By Mike McCarthy

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Carlisle

By Mike McCarthy

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Carlisle Castle

By M. R. McCarthy, H. R. T. Summerson, R. G. Annis

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A Roman Anglian and Medieval Site at Blackfriars Street Carlisle

By Michael R. McCarthy

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"This important and significant volume examines, for the first time, the ordinary people of Roman Britain. This overlooked group -- the farmers, shopkeepers, labourers and others -- fed the country...

Romano British Peasant

By Mike McCarthy

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Romano British Peasant

By Mike McCarthy

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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.