Steven Gaulin Books

Evolutionary Psychology

By Steven Gaulin, David M. Buss, Donald H. McBurney

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Why women need fat

By William D. Lassek

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"Why do women struggle so much with weight? Can women ever lose weight and keep it off? In this incredibly research-driven and counterintuitive book, an anthropologist and a public health doctor te...

Why Women Need Fat

By William D. Lassek

Average: 0.00, 0 Ratings

The groundbreaking discovery that shows why women need fat to lose fat. Why do women struggle so much with weight? Can women ever lose weight and keep it off?In this research-driven and counteri...

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.