Robert V. Keeley Books

The Colonels' Coup and the American Embassy

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The so-called Colonels&’ coup of April 21, 1967, was a major event in the history of the Cold War, ushering in a seven-year period of military rule in Greece. In the wake of the coup, some eight th...

Annals of Investing

By Robert V. Keeley

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The File

By Robert V. Keeley

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Essays Fast and Loose

By Robert V. Keeley

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Letters Mostly Unpublished

By Robert V. Keeley

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The great phelsuma caper

By Robert V. Keeley

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Essays near and far

By Robert V. Keeley

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Three sea stories

By Robert V. Keeley

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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.