Karl Gruber Books

Kurt Waldheims Kriegsjahre. Eine Dokumentation

By Karl Gruber

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Seemacht unter rot weiss roter Flagge. K.u.K. Kriegsmarine Seemacht unter rot weiss roter Flagge. K.u.K. Kriegsmarine

By Karl Gruber

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"Die Geschichte der Seemacht Österreich erstmals aus einer synoptischen Betrachtung als Generalstabsoffizier, Militärhistoriker und Segler"--P. [4] of cover.

Forme et caractere de la ville allemande

By Karl Gruber

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St. Elisabeth im Deutschhaus zu Sterzing

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--Und jetzt die Galoschen fur Minister Gruber!

By Karl Gruber

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Die Gestalt der deutschen Stadt

By Karl Gruber

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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.