Catherine O Neill Books

Describes the ways in which dogs are bred and trained for such careers as livestock guardian, herder, helper for the disabled, sled-puller, and entertainer.

How and Why

By Catherine O Neill

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How and Why

By Catherine O Neill Grace, Catherine O Neill

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Explains how the internal and external parts of your body work, why we grow, and why we have feelings. Answers such questions as "How does my skeleton hold me up?" "Does my heart really look like a...

Grandes Misterios de Nuestro Mundo

By Catherine O Neill

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Love and grief

By Catherine O Neill

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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.