Nancy Duell Books

Rub a wuzzle's tummy!

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Playful Wuzzles romp through die-cut pages which reveal a variety of underlying textures, permitting the reader to reach in and touch a cottony tail, a smooth blue sea, or a scratch-and-sniff flower.

Roundabout Mulberry School

By Nancy Duell, Linda Hayward

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Babette Rabbit and her frisky friends follow clues all around their school to find the Spring Treasure planned by their teacher. On board pages with movable flaps concealing the clues.

Animals Animals Animals

By Nancy Duell, Pat Brigandi

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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.