David E. Johnson Books

Basic electric circuit analysis
From day to day
From day to day

By David E. Johnson

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Carlos Estevez
Carlos Estevez

By David E. Johnson, Jorge J. E. Gracia

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"This book presents the complex art installation of Cuban American artist Carlos Estévez, which deals with elaborate explorations on the metaphor of launching bottles to the sea. The artist launche...

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John Randolph of Roanoke
John Randolph of Roanoke
John Randolph of Roanoke
Kant s dog
Kant s dog

By David E. Johnson

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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.

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