Sandra Markle Books

Family Pack

By Sandra Markle Author Alan Marks Illustrator

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A real-life story of adaptation and survival. Acclaimed science writer Sandra Markle and celebrated artist Alan Marks team up for the fifth time in this fascinating real-life story of a wolf and he...

Waiting for Ice

By Sandra Markle Author Alan Marks Illustrator

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Based on a true story, Waiting for Ice follows an orphaned polar bear cub as she struggles to find food on Wrangel Island, far north in the Arctic Ocean. Left alone at ten months old, the young fem...

Waiting for ice

By Sandra Markle

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Snow School

By Sandra Markle Author Alan Marks Illustrator

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The author/illustrator team of Sandra Markle and Alan Marks has had a profound impact on the world of children’s nonfiction with their collaborative efforts on books about different animals a...

Thirsty, Thirsty Elephants

By Sandra Markle Author Fabricio VandenBroeck Illustrator

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Elephants never forget   During a drought in Tanzania, Grandma Elephant is in search of water for her herd. Little Calf follows along and mimics her grandmother at each stop on their journey....

Spiders

By Sandra Markle

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Insects

By Sandra Markle

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Sharks

By Sandra Markle

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Insects

By Sandra Markle, Simon Pollard

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Sharks Biggest Littlest Paperback

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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.