Penelope Casas Books

"The legacy work by one of the most influential experts on Spanish cuisine. Penelope Casas was one of the premier experts on Spanish food: She taught Americans about jam serrano, Manchego cheese, a...

Delicioso! The Regional Cooking of Spain

By Penelope Casas

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Discovering Spain: An Uncommon Guide

By Penelope Casas

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365 Days in Spain Calendar 2006

By Penelope Casas

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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.