Michael Roloff Books

Demian: The Story of Emil Sinclair's Youth

By Michael Lebeck, Michael Roloff, Hermann Hesse

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The innerworld of the outerworld of the innerworld.

By Peter Handke

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Charade

By Friedrich Ch Zauner

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The Ride Across Lake Constance and Other Plays

By Michael Roloff, Peter Handke

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Ice on the Bridge

By Michael Roloff, Erich Wolfgang Skwara

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The Austrian architect, Sebastian Winter, flies to San Diego from Vienna to attend a conference, filled with apprehension about returning to the city where he had once lived, until the love of his...

Goalkeeper s Anxiety at the Penalty Kick

By Michael Roloff, Peter Handke

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Communication Yearbook 21

By Michael Roloff

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Communication Yearbook 22

By Michael Roloff

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Communication Yearbook 23

By Michael Roloff

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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.