Joseph Cummins Books

"When two supremely powerful political rivals lock horns in a clash of personality and ideology, they can change the course of human history. Great Rivals in History brings to life the drama of his...

The almost complete history of the world

By Joseph Cummins

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True Crime and Punishment Heists

By Joseph Cummins

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Case for Interferon

By Kent Heckenlively, Joseph Cummins, Judy Mikovits

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Case for Interferon

By Kent Heckenlively, Joseph Cummins, Judy Mikovits

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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.