Cordelia Frances Biddle Books

The conjurer

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The disappearance of her father, a wealthy financier in 1842 Philadelphia, draws Martha Beale into an alliance with Thomas Kelman as they investigate the case, one that could be tied to a series of...

Deception's Daughter

By Cordelia Frances Biddle

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The Conjurer

By Cordelia Frances Biddle

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Murder at San Simeon

By Patricia Hearst

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The time was the Roaring Twenties: those prosperous, carefree years after World War I and before the Great Depression. Hollywood was in the throes of talkies, and California's Gold Coast had become...

Beneath the wind

By Cordelia Frances Biddle

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Murder at San Simeon

By Patricia Hearst

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Without fear

By Cordelia Frances Biddle

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"When a headless corpse is discovered on the Philadelphia estate of Joseph Bonaparte, Comte de Survilliers, Martha Beale - the staunchly independent heiress first introduced in The conjurer - is dr...

The Actress

By Cordelia Frances Biddle

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Conjurer The

By Cordelia Frances Biddle, Dara Rosenberg

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Saint Katharine

By Cordelia Frances Biddle

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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.