Alfred Fogarassy Books

Ignaz Gridl Eisenkonstruktionen

By Nora Schoeller, Alfred Fogarassy

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Wiener Ringstrasse

By Alfred Fogarassy

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Vienna s Ringstrasse

By Monika Faber, Nora Schoeller, Jochen Martz, Alfred Fogarassy, Michaela Lindinger

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"This publication is released on the 150th anniversary of the inauguration of the Ringstrasse 1865."

Otto Wagner

By Andreas Nierhaus

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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.