Achim Gnann Books

Raphael und der klassische Stil in Rom, 1515-1527

By Achim Gnann

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Raphael and His School

By Achim Gnann, Michiel Plomp

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Spurensuche

By Achim Gnann, Heinz Schodl

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One of the most fascinating aspects of Rembrandt?s oeuvre are his landscape drawings, around 260 of which have survived. Wandering through the city of Amsterdam, he depicted neighbourhoods, canals,...

Michelangelo

By Achim Gnann, Klaus Albrecht Schroder, Michaelangelo

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Noel

By Achim Gnann, Cora Anna Noel, Constanze Malissa, Klaus Albrecht Schroder, Leonie Pfennig

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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.