Claude J. Allegre Books

Isotope Geology

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"Radiogenic and stable isotopes are used widely in the Earth Sciences to determine the ages of rocks, meteorites, and archeological objects, and as tracers to understand geological and environmenta...

The Behavior of the Earth

By Claude Allegre, Claude J. Allegre

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The Behavior of the Earth

By Claude J. Allegre

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From Stone to Star

By Claude J. Allegre

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From Stone to Star

By Claude J. Allegre

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Toute verite est bonne a dire

By Claude J. Allegre

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Les Audaces De La Verite

By Claude J. Allegre

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Defi du monde

By Claude J. Allegre

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La Defaite de Platon ou la science du XXe siecle

By Claude J. Allegre

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Introduction a une histoire naturelle

By Claude J. Allegre

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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.