Leonard B. Nelson Books

This text is part of the Color Atlas and Synopsis of Clinical Ophthalmology which was developed at Philadelphia's famed Wills Eye Institute. The beauty of this series is the powerful combination of...

Wills eye strabismus atlas

By Leonard B. Nelson

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Paediatric Optometry

By Bernard Gilmartin, William Harvey

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Pediatric Ophthalmology

By Scott E. Olitsky, Leonard B. Nelson

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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.