Catharine Arnold Books

"Before HIV or Ebola, there was the Spanish flu--this narrative history marks the one hundredth anniversary of an epidemic that altered world history. In January 1918, as World War I raged on, a ne...

Edward VII

By Catharine Arnold

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"Edward Prince of Wales, better known as "Bertie," was the eldest son of Queen Victoria. Charming and dissolute, he was a larger-than-life personality with king-size appetites. A lifelong womanizer...

Necropolis

By Catharine Arnold

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Underworld London Pa

By Catharine Arnold

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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.