Donald R. Kelley Books

Divided Power

By Donald R. Kelley

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Divided Power

By Donald R. Kelley

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Historians and Ideologues

By John Hearsey McMillan Salmon

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The History of Ideas

By Donald R. Kelley

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History and the Disciplines

By Donald R. Kelley

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This collection of essays addresses, in specific historical ways and from particular disciplinary standpoints, the problem of knowledge and what used to be called the classification of the sciences...

The Shapes of Knowledge from the Renaissance to the Enlightenment

By Donald R. Kelley

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Foundations of Modern Historical Scholarship

By Donald R. Kelley

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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.