Dusan Djukic Books

The IMO Compendium

By Vladimir Z. Jankovic, Ivan Matic, Dusan Djukic

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The IMO Compendium A Collection of Problems Suggested for The International Mathematical Olympiads

By Vladimir Jankovic, Ivan Matic, Dusan Djukic

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The IMO compendium

By International Mathematical Olympiad

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The IMO Compendium is the ultimate collection of challenging high school level mathematics problems. It is an invaluable resource, not only for students preparing for competitions, but for anyone w...

Imo Compendium

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The IMO Compendium: A Collection of Problems Suggested for The International Mathematical Olympiads: 1959-2004

By Vladimir Jankovic, Nikola Petrovic, Ivan Matic, Dusan Djukic

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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.