Jonathan Ryder Books

The Cry of the Halidon

By Jonathan Ryder

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The Prometheus deception

By Robert Ludlum

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Een gewezen agent van een ultrageheime organisatie wordt door de CIA benaderd om een mogelijke samenzwering tot het verkrijgen van de wereldheerschappij te onderzoeken.

Het Halidon komplot

By Ryder Jonathan Pseud. Van Robert Ludlum

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Een geoloog, belast met een winstgevende doch geheime missie op Jama"ica, blijkt terecht te zijn gekomen in een gecompliceerd web van intriges en verraad.

The Bourne Identity

By Robert Ludlum

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Trevayne

By Jonathan Ryder

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L art et la technique du comedien

By Jean Laurent Cochet

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Das Jesus Papier.

By Robert Ludlum

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Trevayne

By Jonathan Ryder

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The Cry of the Halidon

By Jonathan Ryder, Robert Ludlum

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Cry of the Halidon

By Jonathan Ryder

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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.