Helen Constantine Books

Paris Tales: A Literary Tour of the City

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Paris street tales

By Helen Constantine

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Nana

By Emile Zola, Helen Constantine, Brian Nelson

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From the Publisher: Fiction is much more enlightening about a country and its people than are statistics, and if we want to find out and understand what a nation is really like, we must read its li...

Berlin Tales

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Rome Tales

By Helen Constantine, Hugh Shankland

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Paris Metro Tales

By Helen Constantine

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Madrid Tales

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The Conquest of Plassans

By Emile Zola

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"The arrival of Abbé Faujas in the provincial town of Plassans has profound consequences for the community, and for the family of François Mouret in particular. Faujas and his mother come to lodge...

Vienna Tales

By Helen Constantine, Holmes Deborah

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"Situated on the cusp of West and East, between the foothills of the Alps and the mighty "Blue Danube", Vienna has long presented authors with a wealth of material for stories that entertain and in...

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.