Wolfgang Hirschfeld Books

Hirschfeld:The Secret Diary Of A U-Boat

By Wolfgang Hirschfeld

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xvi, 255 p., [16] p. of plates : 20 cm

Hirschfeld

By Wolfgang Hirschfeld

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Hirschfeld

By Wolfgang Hirschfeld

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Hirschfeld

By Wolfgang Hirschfeld

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Whilst there have been many memoirs written by U-boat commanders of the Second World War, a book such as this, based upon the diaries of a senior Petty Officer telegraphist, written in 'real time'...

Feindfahrten

By Wolfgang Hirschfeld

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Eisiger Atlantik. Die eisernen Sarge Feindfahrten.

By Herbert A. Werner, Wolfgang Hirschfeld

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Feindfahrten

By Wolfgang Hirschfeld

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Letzte Boot

By Wolfgang Hirschfeld

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Hirschfeld

By Wolfgang Hirschfeld

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Hirschfeld

By Wolfgang Hirschfeld, Geoffrey Brooks

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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.