Gregory Cochran Books

The 10000 Year Explosion

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Resistance to malaria. Blue eyes. Lactose tolerance. What do all of these traits have in common? Every one of them has emerged in the last 10,000 years. Scientists have long believed that the "grea...

The 10 000 Year Explosion How Civilization Accelerated Human Evolution

By Henry Harpending, Gregory Cochran

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Trading with the enemy

By Miller Tom, Gregory Cochran

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3 2 1 Preach

By Gregory Cochran

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3 2 1 Preach

By Gregory Cochran

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3 2 1 Preach

By Gregory Cochran

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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.