Leon Nielsen Books

"This guide is a invaluable resource for Howard collectors. Chapters provide a biography, Howard's literary legacy, and tips about book collecting, grading, buying and selling. The main body is a b...

Robert E. Howard

By Leon Nielsen

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Arkham House Books

By Leon Nielsen

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Robert E. Howard

By Leon Nielsen

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Chemical Immobilization of Wild and Exotic Animals

By Leon Nielsen

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Translocation of Wild Animals

By Leon Nielsen

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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.