Gwen Rowley Books

Practicing Paragraphs

By Judy Pearce, Gene Fazio, Pamela Lear, Gwen Rowley

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Knights of the Round Table: Gawain

By Gwen Rowley

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Sir Gawain is a knight as good as his word. Fiercely loyal to Arthur, he will do anything to serve his king. So when a hideous crone promises to give Arthur the answer to a riddle that will save hi...

Knights of the Round Table: Lancelot

By Gwen Rowley

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Strong and powerful warriors of nobility and honor, the Knights of the Round Table fought for kings, rescued damsels, and undertook dangerous quests. But true love may be the most perilous quest of...

Knights of the Round Table: Geraint

By Gwen Rowley

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Powerful warriors of nobility and honor, the Knights of the Round Table fought for king and country, rescued damsels, and went on dangerous quests. But true love may be the most perilous quest of a...

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.