Simon LeVay Books

Here Be Dragons: The Scientific Quest for Extraterrestrial Life

By David Koerner, Simon LeVay

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Discovering Human Sexuality

By John Baldwin, Simon LeVay, Janice Baldwin

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City of Friends: A Protrait of the Gay and Lesbian Community in America

By Simon LeVay

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City of Friends offers a practical, intelligent, and well-informed overview of what it means to be gay or lesbian. The authors seek to help gay men and women, as well as their families and friends,...

City of Friends: A Portrait of the Gay and Lesbian Community in America

By Simon LeVay, Elizabeth Nonas

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Queer Science: The Use and Abuse of Research into Homosexuality

By Simon LeVay

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When Science Goes Wrong

By Simon LeVay

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Human Sexuality

By Simon LeVay, Sharon M. Valente

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Healing the Brain

By Simon LeVay, Curt Freed

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Healing the Brain

By Simon LeVay, Curt Freed

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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.