William Dufris Books

The Case of the Missing Monkey High Rise Private Eyes

By Jean Little, G. Brian Karas

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The Case of the Puzzling Possum High Rise Private Eyes

By Jean Little, G. Brian Karas

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The Case of the Puzzling Possum High Rise Private Eyes

By Jean Little, G. Brian Karas

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Case of the Missing Monkey the

By MR G Brian Karas, Cynthia Rylant, William Dufris

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Muncha Muncha Muncha

By MR G Brian Karas, Candace Fleming, William Dufris

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Raven Rise

By D. J. MacHale, William Dufris

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Tom Sawyer and Huckleberry Finn think they are clever characters. When Tom and Huck witness a murder, however, they find themselves hurled into a series of adventures that lead them to some serious...

The Case Of The Fidgety Fox The High Rise Private Eyes

By Jean Little

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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.