Ted Nelson Books

"To engage prospective elementary and middle-school teachers in mathematical activities that will enhance their conceptual knowledge, introduce them to important manipulatives, and model the kind o...

Computer Lib Dream Machines

By Ted Nelson

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Mount St. Helens National Volcanic Monument

By Sharlene Nelson

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Describes the destruction caused by the eruption of Mount St. Helens in 1980, the slow return of plant and animal life, and the special area set aside to study this renewal.

Olympic National Park

By Sharlene Nelson

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Describes the landscape, wildlife, and activities of Washington State's Olympic National Park.

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.

Ted Nelson Books

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

What is an EAN and How Does it Relate to an ISBN?