Sharon Kay Penman Books

The Queen's Man: A Medieval Mystery

By Sharon Kay Penman

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The Queen's Man: A Medieval Mystery

By Sharon Kay Penman

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Cruel as the Grave: A Medieval Mystery

By Sharon Kay Penman

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Dragon's Lair

By Sharon Kay Penman

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July 1193. King Richard Lionheart lies in a German prison, held for ransom by the emperor. His mother, Dowager Queen Eleanor, ransacks England for gold to buy his freedom, while his younger brother...

Cruel as the Grave

By Sharon Kay Penman

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April 1193. England’s King Richard Lionheart languishes in a German prison, and treason scents the air. Richard’s younger brother, John, seizes Windsor Castle, and Dowager Queen Eleanor of Aquitain...

Time and Chance

By Sharon Kay Penman

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Dragon's Lair

By Sharon Kay Penman

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Prince of Darkness

By Sharon Kay Penman

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Lionheart

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Dragon s lair

By Sharon Kay Penman

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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.