Gregory Ryan Books

Famous children s authors

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Author Profiles, Harry Allard, Stan and Jan Berenstain, Judy Blume, Mary Calhoun, Eric Carle, Beverly Cleary, Laurent de Brunhoff, Tomie DePaola, Paul Galdone, Ezra Jack Keats, Steven Kellogg, Arno...

Famous Children s Authors Book II

By Shirley Norby, Gregory Ryan

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Famous Children s Authors Activities

By Shirley Norby, Gregory Ryan

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Famous illustrators of children's literature

By Shirley Norby

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Multicultural Literature

By Shirley Norby, Gregory Ryan, Darcy Myers

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Burning Heart

By Gregory Ryan

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Catholic High School Ministry

By Gregory Ryan, Keith Warrick, Patrick Clifford

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My Happy Heart

By Gregory Ryan

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The ABCs of Thomas Merton

By Gregory Ryan, Elizabeth Ryan

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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.