Isaac Argyros Books

Deux traites byzantins de construction de l astrolabe

By Isaac Argyros, Claude Jarry, Nikephoros Gregoras

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"À Byzance, au XIVème siècle, certains commencent à prendre conscience de l'avance prise dans le domaine de l'astronomie par les mondes occidental et arabo-persan. L'astrolabe, qui paraît avoir dis...

Isaac Argyri opera omnia theologica necnon Iohannis ex imperatoris Cantacuzeni Oratio adversus Argyrum

By Isaac Argyros

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Isaac Argyros was a leading astronomer and theologian of the late 14th century, who spent most of his life at the Chora monastery in Constantinople. Besides several works on astronomy, he wrote a n...

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.