Calhoun Charles W. Books

Benjamin Harrison

By Calhoun Charles W.

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FROM BLOODY SHIRT TO FULL DINNER PAIL

By Calhoun Charles W.

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Gilded Age Cato

By Calhoun Charles W.

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Presidency of Ulysses S. Grant

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The Presidency of Ulysses S. Grant

By Calhoun Charles W.

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"As controversial in politics as he was in the military, Ulysses S. Grant (1822-1885) was an embattled president, enormously popular with the American people, yet the target of unrelenting censure...

Presidency of Ulysses S. Grant

By Calhoun Charles W.

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Minority Victory

By Calhoun Charles W.

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Minority victory

By Calhoun Charles W.

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From bloody shirt to full dinner pail

By Calhoun Charles W.

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Gilded Age Cato

By Calhoun Charles W.

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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.