Piotr Eberhardt Books

Ethnic Groups and Population Changes in Twentieth Century Central Eastern Europe

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This unique reference traces the changing borders and ethnic balances that characterized the history of Eastern Europe during the twentieth century. After a preliminary overview, the book divides E...

Geografia ludnosci Rosji

By Piotr Eberhardt

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Slowianska geopolityka

By Piotr Eberhardt

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Problematyka geopolityczna ziem polskich

By Piotr Eberhardt

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Political migrations on Polish territories 1939 1950

By Piotr Eberhardt

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Polska ludnosc kresowa

By Piotr Eberhardt

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Migracje polityczne na ziemiach polskich

By Piotr Eberhardt

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Polska granica wschodnia, 1939-1945

By Piotr Eberhardt

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Przemiany narodowosciowe na Bialorusi

By Piotr Eberhardt

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Polska i jej granice

By Piotr Eberhardt

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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.