Michael Gruber Books

The Charles Bridge

By Michael Gruber

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The Long Con

By Michael Gruber

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The good son

By Gruber Michael

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Somewhere in Pakistan, Sonia Laghari and eight fellow members of a symposium on peace are being held captive by armed terrorists. Sonia, a deeply religious woman as well as a Jungian psychologist,...

The good son

By Gruber Michael

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Somewhere in Pakistan, Sonia Laghari and eight fellow members of a symposium on peace are being held captive by armed terrorists. Sonia, a deeply religious woman as well as a Jungian psychologist,...

La nuit du jaguar

By Gruber Michael

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Tropique de la nuit

By Michael Gruber

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The Soul Hit a Harper Novel of Suspense

By Charlie Tim Hunter Haas

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Le livre de l air et des ombres

By Gruber Michael

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Tout commence lorsqu'un professeur apporte à Jake Mishkin, avocat new-yorkais, des lettres anciennes dissimulées depuis plus de 400 ans par un maître espion du XVe siècle et spécialiste en cryptolo...

Aktuelle Fragen des Versicherungsrechts

By Erwin Migsch, Michael Gruber

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Treuhandbeteiligung an Gesellschaften

By Gruber Michael Univ. Ass. Dr.

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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.