Simon LeVay Books

Discovering Human Sexuality

By John Baldwin, Simon LeVay, Janice Baldwin

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Discovering Human Sexuality Fourth Edition

By John Baldwin, Simon LeVay, Janice Baldwin

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Queer Science: The Use and Abuse of Research into Homosexuality

By Simon Levay

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What makes people gay, lesbian, bisexual, or heterosexual? And who cares? These are the twin themes of Queer Science, a scientific and social analysis of research in the field of sexual orientation...

Human sexuality

By Simon LeVay

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Discovering Human Sexuality

By John D. Baldwin, Simon LeVay, Janice I. Baldwin

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"An evidence-based, accessible introduction to the study of sexuality and the diverse ways in which it brings joys and challenges to our lives. Now in its fifth edition, Discovering Human Sexuality...

Sexual Brain

By Simon LeVay

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Queer Science

By Simon LeVay

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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.