Patrick Dennis Books

How Firm a Foundation

By Patrick Dennis

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Auntie Mame

By Patrick Dennis

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With a wit as sharp as a vodka stinger and a heart as free as her spirit, Auntie Mame burst onto the literary scene in 1955--and today remains one of the most unforgettable characters in contempora...

Mame

By Patrick Dennis

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Genius

By Patrick Dennis

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Genius

By Patrick Dennis

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Genius

By Patrick Dennis

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Auntie Mame

By Patrick Dennis

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Around the World with Auntie Mame

By Patrick Dennis

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Little Me

By Patrick Dennis

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Auntie Mame

By Patrick Dennis, Christopher Lane

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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.