Martin Mayer Books

Martin Mayer

By Mayer Martin, Heinz Spielmann

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Von der Herzoglich Nassauischen Offentlichen Bibliothek zur Hochschul und Landesbibliothek RheinMain.

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The betrayed profession

By Sol M. Linowitz

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Risky business

By Elizabeth Luessenhop

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In this fascinating insider's account, an American woman who became an investor alleges that irresponsibility, incompetence, greed, and fraud at Lloyd's, the world's most glamorous insurance enterp...

Geheime Diplomatie und offentliche Meinung

By Martin Mayer, Mayer Martin

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La Reserva Federal The Federal Reserve

By Martin Mayer

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Markets

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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.