Matyas Havrda Books

The so called eighth Stromateus by Clement of Alexandria

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The so-called eighth 'Stromateus' ('liber logicus') by Clement of Alexandria (d. before 221 C.E.) is an understudied source for ancient philosophy, particularly the tradition of the Aristotelian me...

Galen s Epistemology

By R. J. Hankinson, Matyas Havrda

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Galen s Epistemology

By R. J. Hankinson, Matyas Havrda

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The so-called eighth Stromateus by Clement of Alexandria

By Matyas Havrda

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Galens Epistemology

By R. J. Hankinson, Matyas Havrda

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Galen rsaquo on Demonstration lsaquo

By Pauline Koetschet, Matyas Havrda

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Galen rsaquo on Demonstration lsaquo

By Pauline Koetschet, Matyas Havrda

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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.