Christina Macdonald Books

Medicines of the Maoris

By Christina Macdonald

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Garden Herbs for Australia and New Zealand

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Dementia Care

By Christina McDonald

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Run Yourself Fit

By Christina Macdonald

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15 Minute Fitness

By Christina Macdonald, Eddie MacDonald, Christina MacDonald, Eddie MacDonald

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No need to spend hours each day exercising to lose weight and reach your fitness goals. Now you can train smart and get lasting results! This new guide is aimed at the busy, modern female who value...

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.