Leonard Warren Books

Joseph Leidy: The Last Man Who Knew Everything

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This is the first published biography of the remarkable Joseph Leidy - a leading American scientist of the mid-nineteenth century, the foremost human anatomist of his time, the first truly producti...

New Perspectives on Evolution

By Leonard Warren

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Bound Carbohydrates in Nature

By Leonard Warren

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Constantine Samuel Rafinesque

By Leonard Warren

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"Half a century after the death of Constantine Samuel Rafinesque in 1840, a small number of researchers, biographers, and historians of natural science suggested that the famed botanist's last name...

Adele Marion Fielde

By Leonard Warren

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Maclure of New Harmony

By Leonard Warren

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Maclure of New Harmony

By Leonard Warren

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Adele Marion Fielde

By Leonard Warren

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Bound Carbohydrates in Nature

By Leonard Warren

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Bound Carbohydrates in Nature

By Leonard Warren

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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.