Jill Calder Books

What Is Poetry?: The Essential Guide to Reading and Writing Poems

By Michael Rosen Illustrated By Jill Calder

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Celebrated poet and critic Michael Rosen takes readers on a whirlwind tour exploring what poems are, what they can do, and the joys of reading and writing them.For thousands of years, people have b...

Picture Atlas

By Jill Calder, Simon Holland

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Sea

By Miranda Krestovnikoff, Jill Calder

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What Is Poetry

By Michael Rosen, Jill Calder

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Robert the Bruce

By Robertson James, Jill Calder

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What Is Poetry

By Michael Rosen, Jill Calder

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The Ocean: Exploring Our Blue Planet

By Miranda Krestovnikoff, Jill Calder

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Oceans cover more than 70% of the world--and so much science is lurking underneath that water's surface. This survey-style book explores an incredible collection of narratives, featuring fascinatin...

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.