Helmut Goetz Books

Nuntiatur Des Girolamo Martinengo (1550-1554)

By Goetz., Helmut Goetz, Helmut

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Nuntiatur Delfinos, Legation Morones, Sendung Lippomanes

By Catholic Church., Helmut Goetz

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I Membri Francesi Del Governo Provvisorio Della Repubblica Napoletana Del 1799

By Helmut Goetz

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Nuntiatur Giovanni Delfinos (1572-1573) (German Edition)

By Peter Schmidt, Catholic Church Apostolic Nunciature (Germany), Helmut Goetz, Konrad Repgen, Erwin Gatz

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Die Reihe der „Nuntiaturberichte aus Deutschland“ erfasst und ediert den Schriftwechsel zwischen den päpstlichen Diplomaten in Wien und der Kurie in Rom. Der neue Band enthält die Korrespondenz aus...

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.