Norman Butler Books

Car mechanic

By Norman Butler, Catherine White

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Building and Using Binoscopes

By Norman Butler

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Focusing on both homemade and commercial products, this book provides the reader with simple and straightforward information about the modelling and building of binoscopes. Binoscopes can be though...

Building Binoscopes

By Norman Butler

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The Sinister Potion

By Norman Butler

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Building and Using Binoscopes

By Norman Butler

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Arthropod Borne Diseases

By Carlos Brisola Marcondes

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Building and using binoscopes

By Norman Butler

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Provides easy to understand information and guidelines about the design and construction of binoscopes. Focusing on both homemade and commercial products, this book provides the reader with simple...

History of Binoscopes

By Norman Butler

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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.