Roger Boylan Books

Bud, Not Buddy Study Guide with Connections

By Roger Boylan

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The great Pint-Pulling Olympiad

By Roger Boylan

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"It's the month before the Pint-Pulling Olympiad and the town of Killoyle, Ireland, is all abuzz. After crashing into a cross-dressing church sexton, local lush Mick McCreek loses his job as a car...

Killoyle.

By Roger Boylan, Harry Rowohlt

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Handbuch der Kulturwissenschaften Band 3

By Burkhard Liebsch, Jurgen Straub, Friedrich Jaeger, Jorn Rusen

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Study Guide 1984 By George Orwell With Connections

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Sherlock Holmes

By Roger Boylan, Doyle A. Conan

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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.