Gerhard Ongyerth Books

Handbuch stadtebauliche Denkmalpflege

By Claus Peter Echter, Heinrich Walgern, Gerhard Ongyerth, Volkmar Eidloth

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Historische Stadte in Deutschland

By Katrin Bek, Gerhard Ongyerth, Volkmar Eidloth

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Kulturlandschaft Wurmtal

By Gerhard Ongyerth

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Handbuch Stadtebauliche Denkmalpflege

By Heinrich Walgern, Gerhard Ongyerth, Volkmar Eidloth

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Konservatorisches Handeln im städtebaulichen Zusammenhang bedarf einer besonderen Vorgehensweise, zeitlichen Abstimmung und Methode. Das von der Arbeitsgruppe Städtebauliche Denkmalpflege in der Ve...

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.