Helen E. Fisher Books

The sex contract

By Helen E. Fisher

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Anatomy of Love: The Natural History of Monogamy, Adultery, and Divorce

By Helen E. Fisher

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"Why do we marry? Why are some people adulterous? Why do human beings divorce? What is infatuation? When did human love and sex evolve, and what is the future of the family? In this brilliant book...

Anatomy of love

By Helen E. Fisher

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Updated to include the latest research on anthropology and internet-age relationships, a revised edition of a classic reference examines the brain's role in love and courtship while making recommen...

Anatomy of Love

By Helen Fisher

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The First Sex: The Natural Talents of Women and How they are Changing the World

By Helen Fisher, Helen E. Fisher

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The sex contract

By Helen E. Fisher

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The First Sex

By Helen Fisher

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Helen Fisher reveals in The First Sex how women's natural talents are changing the world, making women ideal leaders and successful shapers of business and society today and on into the twenty-firs...

The Sex Contract: The Evolution of Human Behavior

By Helen E. Fisher

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The Sex Contract: The Evolution of Human Behavior

By Helen E. Fisher

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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.