Olga Kotkova Books

Cechy sasko

By Marius Winzeler, Olga Kotkova

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Hans Holbein the Elder Hohenburg Altarpiece

By Olga Kotkova, Veronika Lopauraova

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This publication provides a broader context to the results of the restoration, technological and art historical research currently being conducted on Hans Holbein the Elder's Hohenburg altarpiece w...

Stari mistri II

By Olga Kotkova, Martina Jandlova, Lucie Kasikova

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Ziva spojeni

By Michaela Ottova, Magdalena Nespesna Hamsikova, Olga Kotkova

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Ziva spojeni

By Michaela Ottova, Magdalena Nespesna Hamsikova, Olga Kotkova

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Mistrovska dila z kolowratske obrazarny v Rychnove nad Kneznou

By Olga Kotkova

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Summary: The Kolowrat-Krakowsky Libsteinsky family collection in Rychnov nad Knenou is one of the major assemblages to have been amassed in Bohemia by members of the aristocracy. Painting collectio...

Falza Falza

By Olga Kotkova

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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.