Judit Polgar Books

Tactician s Handbook

By Judit Polgar, Victor Charushin

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Sofia Polgar

By Susan Polgar, Judit Polgar, Sofia Polgar

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Sofia Polgar

By Susan Polgar, Judit Polgar, Sofia Polgar

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Master Your Chess with Judit Polgar: Fight for the Center and Other Lessons from the All-Time Best Female Chess Player

By Judit Polgar, Andras Toth

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Judit Polgar was the best female chess player in the world for a record 26 years. In this book she reveals some of the secrets of her success. Together with prize-winning coach, International Maste...

Chess and English with Judit Polgar, Students Book

By Judit Polgar, George Angyan

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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.