Leland Northam Books

Wings 2

By Leland Northam, Jacqueline Flamm

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One World: American English Student Book, Level 1

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The ugly duckling

By M. Eulalia Valeri

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A retelling of the Danish fairy tale, in which the inside pages feature illustrations without text and the words intended for the story's narration appear on the back cover.

Wings 1

By Leland Northam, Jacqueline Flamm

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Wings 3

By Leland Northam, Jacqueline Flamm

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Hansel and Gretel

By M. Eulalia Valeri

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A retelling of the German fairy tale, in which the inside pages feature illustrations without text and the words intended for the story's narration appear on the back cover.

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.