Jon Hassler Books

Rookery, Minnesota, is about as far north as you can go and still be in the United States, and Rookery State College is an academic backwater if ever there was one. The campus is populated by stude...

Rookery Blues

By Jon Hassler

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North of hope

By Jon Hassler

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Dear James

By Jon Hassler

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Grand Opening

By Jon Hassler

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The Love Hunter

By Jon Hassler

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Green Journey

By Jon Hassler

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Staggerford

By Jon Hassler

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Simon s Night

By Jon Hassler

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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.