Mary O Neill Books

Collins English thesaurus

By Mary O Neill, Elspeth Summers

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Hailstones and halibut bones

By Mary O Neill, Mary Le Duc O Neill

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Fingers Are Always Bringing Me News

By Mary O Neill

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Hailstones and Halibut Bones

By Mary O Neill, Mary Le Duc O Neill

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Twelve poems reflect the author's feelings about various colors.

Beloved by readers and critics alike for over 60 years, Mary O’Neill’s timeless children’s poetry book is a tribute to the many colors we see around us, and is considered a modern classic. Featurin...

Hailstones Halibut Bones O Neill

By Mary O Neill

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People I'd Like to Keep

By Mary O Neill

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From the Classroom to the Boardroom

By Mary O Neill, Gerald Lee Boyd

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The World of Dinosaurs

By Mary O Neill

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Dinosaur mysteries.

By Mary 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.