Eric A. Posner Books

This book explores the rapidly developing area of research called hedonics or "happiness studies." Researchers from fields such as philosophy, law, economics, and psychology explore the bases of ha...

Law and Happiness

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Law and social norms

By Eric A. Posner

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New Foundations of Cost Benefit Analysis

By Matthew D. Adler, Eric A. Posner

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Climate change justice

By Eric A. Posner

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Climate change and justice are so closely associated that many take it for granted that a global climate treaty should directly address both issues together. In clear language, this book proposes f...

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.