Ellen Erwin Books

The Audrey Hepburn treasures pictures and mementos from a life of style and purpose.

By Erwin Ellen Diamond Jessica Foreword By Sean Hepburn Ferrer

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Y Tu Que Sabes ?!

By Betsy Chasse, Mark Vicente, Ellen Erwin, Jack Forem, William Arntz

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The Audrey Hepburn Treasures

By Ellen Erwin, Jessica Z. Diamond

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Presents a collection of one hundred of the most iconic photographs taken of the Hollywood star and humanitarian, selected by her family and representing the work of such noted photographers as Sir...

Audrey Hepburn Treasures

By Ellen Erwin, Jessica Z. Diamond, Sean Hepburn Ferrer

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Audrey 100 A Rare And Intimate Photo Collection Selected By Audrey Hepburns Family

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Los tesoros de Audrey Hepburn

By Ellen Erwin

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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.