Siegfried Griesa Books

Frankfurt an der Oder 1253-2003

By Gangolf Hubinger, Felix Ackermann, Ulrich Knefelkamp, Siegfried Griesa, Iris Berndt, Rita Aldenhoff Hubinger, Justyna Gralak

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Der Burgwall von Lossow Forschungen von 1909 bis 1984

By Siegfried Griesa

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This volume deals with the fortification of the Lusatian Culture still surviving some 4-6 m high, which was probably preceded by a - possibly also fortified - settlement of the Early Bronze / Early...

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.