Jerzy Wyrozumski Books

Oskar Halecki 1891 1973

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"The book commemorates the 40th anniversary of the death of one of Poland's greatest historians who during and after World War II found haven in the United States and tragically found it impossible...

Najdawniejsze dzieje ziem polskich (do VII w.) ? Dzieje Polski piastowskiej (VIII wiek-1370)

By Jerzy Wyrozumski, Stanislaw Grodziski, Marian Zgorniak, Piotr Kaczanowski, Janusz Krzysztof Kozlowski

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784 s. : faks., fot, mapy, portr., rys. ; 25 cm.

Krakow

By Jerzy Wyrozumski

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Nauka i oswiata

By Jerzy Wyrozumski, Andrzej Meissner

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Historia Polski

By Jerzy Wyrozumski, Jozef Andrzej Gierowski

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Kazimierz Wielki

By Jerzy Wyrozumski

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290 p., [16] p. of plates : ill. ; 22 cm.

Kazimierz Wielki

By Jerzy Wyrozumski

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Cracovia mediaevalis

By Jerzy Wyrozumski

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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.