Ralph Jentsch Books

Hans Pels Leusden in seliger Mal Lust

By Ludwig Lange, Julia Fernow, Ralph Jentsch, Hans Pels Leusden, Gudrun Fritsch

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Künstler, Publizist, Buchhändler und Antiquar, Galerist, Kunstsammler und Museumsgründer - Hans Pels-Leusdens vielfältiges Engagement hat in Berlin-Charlottenburg Spuren hinterlassen. Als Bronze-St...

George Grosz 1893-1959

By George Grosz

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Illustrierte Bucher Des Deutschen Expressionismus

By Ralph Jentsch

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Illustrierte Bucher des deutschen Expressionismus

By Ralph Jentsch

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Hans Mied

By Hans Meid, Hans Mied

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Alfred Flechtheim George Grosz

By Ralph Jentsch

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Grosz s New York

By Ralph Jentsch

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George Grosz 1893 1959

By George Grosz

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George Grosz

By Ralph Jentsch

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George Grosz Das Auge des Kunstlers.

By Ralph Jentsch

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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.