Sandra Markle Books

Creepy Crawly Baby Bugs

By Sandra Markle

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Down Down Down in the Ocean

By Sandra Markle

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Race the wild wind

By Sandra Markle

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A few horses, set free on Sable Island, Nova Scotia, soon become wild and, led by one fine stallion, find a way to survive. Includes historical notes and facts about wild horses.

Race the wild wind

By Sandra Markle

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A few horses, set free on Sable Island, Nova Scotia, soon become wild and, led by one fine stallion, find a way to survive. Includes historical notes and facts about wild horses.

Wolverines Animal Scavengers

By Sandra Markle

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Jackals

By Sandra Markle

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Musk Oxen Animal Prey

By Sandra Markle

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Porcupines Animal Prey

By Sandra Markle

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Porcupines Animal Prey

By Sandra Markle

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Los Cocodrilos Crocodiles Animales Depredadores Animal Predators

By Sandra Markle

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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.