Ward Calhoun Books

Must see movies

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In Must-See Movies, author Ward Calhoun shares an eclectic mix of motion pictures that he considers required viewing. From dramas to comedies, international classics to Hollywood musicals, Must-See...

Animal Attraction

By Ward Calhoun

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Catastrophe

By Ward Calhoun

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The Llama Sutra

By Ward Calhoun

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Animal Attraction

By Ward Calhoun

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The Llama sutra

By Ward Calhoun

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Wisdom of puppies

By Ward Calhoun

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Woody Allen

By Ward Calhoun

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Woody Allen

By Ward Calhoun

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Mustsee Movies An Essential Guide

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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.