Ralf Hocker Books

Das grosse Lexikon der Rechtsirrtumer

By Ralf Hocker

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Lexikon der Rechtsirrtumer

By Ralf Hocker

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Neues Lexikon der Rechtsirrtumer

By Ralf Hocker

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Lexikon der kuriosen Rechtsfalle

By Ralf Hocker

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Die Lust vieler Mitbürger, auch wegen nichtiger und aberwitziger Vorkommnisse den Klageweg zu beschreiten, verhilft dem Kölner Rechtsanwalt - diesmal von einem Co-Autor unterstützt - zu genügend St...

Das Grundrecht der Gewissensfreiheit und seine Auswirkungen im Strafrecht

By Ralf Hocker

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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.