John Brunkowski Books

Maine Memories

By Closen Michael, John Brunkowski

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Camper RV humor

By John Brunkowski

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"This amusing book covers early camping history, RV designs, road conditions, driving habits, campground issues, and more, with a twist. Things go wrong in each and every chapter, and that is where...

Gift and Shopping Bag Designs

By Michael Closen, John Brunkowski, Leasa Garvin

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Don t Call Them Trailer Trash

By Michael Closen, John Brunkowski

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Pictorial Guide To Rving

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Airstream Memories

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Koa And The Art Of Kamping

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Amateur Radio Goes Camping Rving The Illustrated Qsl Card History

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RV Camper Toys

By Michael Closen, John Brunkowski

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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.