James C. Klagge Books

How Wittgenstein sought a more effective way of reaching his audience by a poetic style of doing philosophy. Ludwig Wittgenstein once said, "Really one should write philosophy only as one writes po...

Wittgenstein in Exile

By James C. Klagge

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A new way of looking at Wittgenstein: as an exile from an earlier cultural era.Ludwig Wittgenstein's Tractatus Logico-Philosophicus (1922) and Philosophical Investigations (1953) are among the most...

Wittgenstein

By James C. Klagge

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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.