Mark Bernthal Books

In the first story, Barney, Baby Bop, and BJ spend the day working on a farm, learning how to milk cows, gather eggs, and drive a tractor; in the second story, BJ and Barney visit the zoo and learn...

Dinosaur Time

By Peggy Parish

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Barney s Christmas Surprise Barney

By Mark Bernthal

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Barney and BJ Go to the Fire Station Go To... Barney

By Mark Bernthal

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Barney Goes to the Farm Go To... Barney

By Mark Bernthal

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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.