Teun Tieleman Books

Galen and Chrysippus on the Soul

By Teun Tieleman

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Chrysippus on Affections

By Teun Tieleman

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Galen and Chrysippus on the soul

By Teun Tieleman

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This volume deals with books II and III of the On the Doctrines of Hippocrates and Plato by the medical scientist and philosopher Galen of Pergamum (129-C.210 C.E.). In these books Galen offers an...

Galen

By Teun Tieleman

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Galen

By Teun Tieleman

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Letter to His Son

By David Rensberger, Mara Bar Sarapion, Annette Merz, Teun Tieleman

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Letter to His Son

By David Rensberger, Mara Bar Sarapion, Annette Merz, Teun Tieleman

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Letter of Mara Bar Sarapion in Context

By Annette Merz, Teun Tieleman

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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.