Helene Hanff Books

Letter from New York Bbc Woman's Hour Broadcasts

By Helene Hanff

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The Duchess of Bloomsbury Street

By Helene Hanff

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This memoir tells the remarkable story of how Helene Hanff came to write 84, Charing Cross Road, and how its success changed her. Hanff recalls her serendipitous discovery of a volume of lectures b...

84, Charing Cross Road

By Helene Hanff

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"Those who have read The Guernsey Literary and Potato Peel Pie Society, a novel comprised of only letters between the characters, will see how much that best-seller owes 84, Charing Cross Road." --...

84 Charing Cross Road

By Helen Hanff

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The Duchess of Bloomsbury Street

By Helene Hanff

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Apple of my eye

By Helene Hanff

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Underfoot in show business

By Helene Hanff

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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.