Josef Grunenfelder Books

Die schonsten Kathedralen Europas

By Josef Grunenfelder

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Der Stiftsbezirk St. Gallen

By Josef Grunenfelder

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Die Kathedrale St. Gallen

By Josef Grunenfelder

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"Dieses Buch versucht, das wiedergewonnene spätbarocke Baudenkmal in einer Gesamtschau vorzustellen, in dem es bedeutende, während und seit der Restaurierung erschienene, zum Teil entlegen publizie...

Die Kunstdenkmaler des Kantons Zug, Neue Ausgabe II: Die ehemaligen Vogteien der Stadt Zug

By Josef Grunenfelder

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Die Burg Zug

By Josef Grunenfelder

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Kunstdenkmaler des Kantons Zug

By Josef Grunenfelder

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Die Kathedrale St. Gallen

By Josef Grunenfelder

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Cathedrals of Europe

By Josef Grunenfelder

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Orgeln im Kanton Zug

By Josef Grunenfelder

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Frauenthal

By Josef Grunenfelder

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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.