Asghar Mahdavi Books

Asnad-i tijarat-i Iran dar sal-i 1287 Qamari

By Asghar Mahdavi

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Alqab va manasib i asr i Qajari va asnad i Amin al Zarb

By Asghar Mahdavi

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Dictionary of Qajar-era politicians organized alphabetically by title and rank.

Majmu ah i asnad va madarik i chap nashudah dar barah i Sayyid Jamal al Din mashhur bih Afghani

By Asghar Mahdavi, Iraj Afshar

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Jung i Mahdavi

By Asghar Mahdavi

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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.