Jacques Vallee Books

Hay Otros Mundos pero Estan en Este

By Lorenzo Fernandez, Miguel Blanco, Jacques Vallee, Bruno Cardenosa, Manuel Carballal

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Forbidden Science 5, Pacific Heights

By Jacques Vallee

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A Reframing of Unidentified Phenomena As the world entered the 21st century, unresolved mysteries from earlier times were reframed with new clarity. While civilization had matured in technical dept...

Passport to Magonia

By Jacques Vallee

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Forbidden Science - Volume Two

By Jacques Vallee

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Francais d'Ailleurs

By Jacques Vallee

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ANATOMY OF A PHENOMENON: UFO's in Space

By Jacques Vallee

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Fastwalker: A Novel

By Tracy Torme, Jacques Vallee

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UFOs

By Jacques Vallee

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Wonders in the Sky

By Jacques Vallee

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One of the most ambitious works of paranormal investigation of our time, here is an unprecedented compendium of pre-twentieth-century UFO accounts, written with rigor and color by two of today's le...

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.