Marek Krajewski Books

Wyobraznia spoleczna

By Marek Krajewski, Rafal Drozdowski

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Wizualne bazy danych

By Marek Krajewski

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Wratislaviensium studia classica

By Marek Krajewski, Jakub Pigon

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Minotaur s Head

By Marek Krajewski, Danusia Stok

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The end of the world in Breslau

By Marek Krajewski

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"1927, Breslau, Poland: Two elaborate and sadistic murders are discovered within days of each other. The body of an unknown musician, bound and gagged, is found in the walls of a shoemaker's worksh...

Death in Breslau

By Marek Krajewski, Danusia Stok

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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 particularly grisly crime scene, his notoriously robust stomach is turned. A young girl - and suspected spy...

Badania wizualne w dzialaniu

By Marek Krajewski, Krzysztof Olechnicki, Maciej Frackowiak

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Nie widzialne miasto

By Marek Krajewski

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Liczby Charona

By Marek Krajewski

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May 1929. Commissioner Popielski is disciplined and forced to leave the police. Finally he finds time for his passion--mathematics, and for love. A beautiful woman convinces him to take part in a d...

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.