Klaus Petersen Books

Legitimitat und Krise

By Petersen Klaus

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Zur Rechtsgeschichte Nordfrieslands

By Petersen Klaus

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Interpreting censorship in Canada

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Race ethnicity and welfare states

By Pauli Kettunen, Sonya Michel, Klaus Petersen

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Gunnar Myrdal's 'An American Dilemma: The Negro Problem and Modern Democracy' persuaded many scholars that the United States failed to develop a robust welfare state because of its ethnic and racia...

Georg Kaiser

By Petersen Klaus

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130 pages ; 23 cm

Ludwig Rubiner

By Petersen Klaus

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Zensur in der Weimarer Republik

By Petersen Klaus

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Literatur und Justiz in der Weimarer Republik

By Petersen Klaus

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Die Gruppe 1925

By Klaus Petersen

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Die Gruppe 1925

By Petersen Klaus

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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.