Marek Krajewski Books

Hands On High Performance Programming with Qt 5

By Marek Krajewski

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Phantoms of Breslau

By Marek Krajewski

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The minotaur's head

By Marek Krajewski

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When Abwehr Captain Eberhard Mock is called from his New Year's Eve revelries to attend a grisly crime scene, his notoriously robust stomach is turned. A young girl - and suspected spy - who arrive...

Fin du monde a Breslau

By Marek Krajewski, Charles Zaremba

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Mock Pojedynek

By Marek Krajewski

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Dziewczyna o czterech palcach

By Marek Krajewski

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Pomocnik kata Marek Krajewski KSIALtKA

By Marek Krajewski

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Miasto szpiegow

By Marek Krajewski

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Rzeki Hadesu

By Marek Krajewski

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Glowa Minotaura

By Marek Krajewski

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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.