Ruprecht Schleyer Books

Die Grundwasserqualitaet Westdeutscher Trinkwasserressourcen

By R Schleyer

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Source and Sediment

By Hillert Ibbeken

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Asia Minor reprise

By Ruprecht Schleyer

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Between 2012 and 2016, Ruprecht Schleyer travelled throughout Anatolia, photographing the remains of the most celebrated archaeological sites in Asia Minor. He took with him 19th century archaeolog...

Source and Sediment

By P. Ergenzinger, G. Mezzadri, R. Valloni, Ruprecht Schleyer, Hillert Ibbeken

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Source and sediment

By Hillert Ibbeken

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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.