Jill Norman Books

La Cocina Clasica Con Hierbas Aromaticas

By Jill Norman

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Portuguese Phrase Book

By Jill Norman, Antonio De Figueiredo

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The Penguin Portuguese Phrasebook

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A stylish, pocket-size phrasebook perfect for business travelers, backpackers, sightseers, and anyone who wants to keep their Portuguese close at hand Penguin’s Portuguese phrasebook includes a wea...

German Phrase Book Penguin Popular Reference

By Jill Norman, Ute Hitchin

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The Penguin German Phrasebook

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A stylish, pocket-size phrasebook perfect for business travelers, backpackers, sightseers, and anyone who wants to keep their German close at hand Penguin’s German phrasebook includes a wealth of u...

The Penguin Italian Phrasebook

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A stylish, pocket-size phrasebook perfect for business travelers, backpackers, sightseers, and anyone who wants to keep their Italian close at hand Penguin’s Italian phrasebook includes a wealth of...

The Penguin French Phrasebook

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A stylish, pocket-size phrasebook perfect for business travelers, backpackers, sightseers, and anyone who wants to keep their French close at hand Penguin’s French phrasebook includes a wealth of u...

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.