William David Barry Books

Maine

By William David Barry

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Maine Becomes a State

By Shettleworth Earle G. Jr., William David Barry, Stephen Bromage, Ronald F. Banks, Liam Riordan

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Daughter of Francis Martin

By Robert M. Chute, William David Barry, Virginia Chute

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Maine: The Wilder Half of New England

By William David Barry

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Illustrated with well over 200 images drawn from the collections of the Maine Historical Society, the Maine Historic Preservation Commission, Special Collections at the Portland Public Library, the...

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.