John Cassidy Books

Juggling for the Complete Klutz

By John Cassidy

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Dot.Con: The Greatest Story Ever Sold

By John Cassidy

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Presents a history of the Internet stock market boom and inevitable crash, focusing on the role played by entrepreneurs, venture capitalists, Wall Street analysts, journalists, and policy makers.

Dot.con: How America Lost Its Mind and Money in the Internet Era

By John Cassidy

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Dot.Con: The Real Story of Why the Internet Bubble Burst

By John Cassidy

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Juggling for the Complete Klutz with Toy

By John Cassidy, B. C. Rimbeaux

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Unbelievable Bubble Book

By John Cassidy, David Stein

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Juggling for the Complete Klutz with Other

By John Cassidy, B. C. Rimbeaux

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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.