Hellmut Wollmann Books

Evaluating Reforms of Local Public and Social Services in Europe

By Ivan Kopric, Hellmut Wollmann, Gerard Marcou

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Tobi Fibel Leselehrgang und Lesetexte Neubearbeitung neue Rechtschreibung Sachunterrichtslexikon

By Hubert Muller, Hellmut Wollmann

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State and Local Government Reforms in France and Germany

By Vincent Hoffmann Martinot

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The edited book aims at comparatively analysing the development and current situation of state and local government reforms in France and Germany. The articles address State and administrative trad...

Die alte Bundesrepublik

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Transformation sozialistischer Gesellschaften

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Politik im Dickicht der Burokratie

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Handbuch zur Evaluierungsforschung

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Die Zweite Stadt

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Probleme der Stadtpolitik in den 80er Jahren

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Systemwandel und Stadtebau in Mittel- und Osteuropa

By Hellmut Wollmann

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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.