Wilferd Madelung Books

"This book explores broad-ranging themes relating to memory, memorization, memorializing or commemorating in a variety of historical, legal, literary and architectural contexts. Distinguished schol...

Akhbar aimmat al Zaydiyah fi Tabaristan wa Daylaman wa Jilan Nusus wa dirasat

By Eilferd Madelung

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Al Sahib ibn Abbad promoter of rational theology

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Ibadi Texts from the 2nd 8th Century

By Wilferd Madelung, Abdulrahman Al Salimi

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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.