Mayra Fernandez Books

Antonia Novello, doctor

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A biography of President Bush's Surgeon General, focusing on her childhood in Puerto Rico, personal medical problems, training and practice as a pediatrician, and opinions on today's health issues

Judy Baca Artist Beginning Biographies

By Mayra Fernandez

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Ileana Ros Lehtinen Lawmaker

By Mayra Fernandez

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Miriam Colon

By Fernande, Mayra Fernandez

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Ileana Ros-Lehtinen, legisladora

By Mayra Fernandez

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Judy Baca Artista

By Mayra Fernbandez Mayra Fernandez

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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.