Harry H. G. Post Books

On the foundations and sources of international law

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Festschrift for Herman Meijers. "Most of the essays and commentaries collected in this volume were earlier presented and discussed at a Symposium organized in 1998 by the editors, at the T.M.C. As...

Radioactive Waste Management in International and European Legal Perspective

By Aurelien Raccah, Harry H. G. Post

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From Waste to Energy

By Harry H. G. Post

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1998 2000 Eritrea Ethiopia War and Its Aftermath in an International Legal Perspective

By Gabriela Venturini, Harry H. G. Post, Andrea De Guttry

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1998 2000 Eritrea Ethiopia War and Its Aftermath in International Legal Perspective

By Gabriella Venturini, Harry H. G. Post, Andrea De Guttry

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From Waste to Energy

By Harry H. G. Post

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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.