Jonathan Roper Books

Web Usability and Navigation: A Beginner's Guide

By Merlyn Holmes

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Alliteration in culture

By Jonathan Roper

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Charms Charmers and Charming

By Jonathan Roper

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Charms and Charming in Europe

By Jonathan Roper

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Dictionaries as sources of folklore data

By Jonathan Roper

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"[T]here is much folklore data buried in dictionaries, whether compiled by those who were folklorists or by those who were not. Thus dictionaries represent a notable source of folklore data supplem...

Charms and Charming in Europe

By J. Roper

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Charms Charmers and Charming

By J. Roper

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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.