Mary Jo Putney Books

No Longer a Gentleman

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Grey Sommers, Lord Wyndham, never met a predicament he couldn't charm his way out of. Then a tryst with a government official's wife during a bit of casual espionage in France condemns him to a dec...

The Bargain

By Mary Jo Putney

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The Rake

By Mary Jo Putney

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A man who tries to regain his heritage and to claim his place as master of an estate discovers that his estate manager is a woman, who promises him a future and a good life.

The Bargain

By Mary Jo Putney

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To keep her fortune, heiress Lady Jocelyn Kendall impulsively weds a penniless officer dying of wounds received at Waterloo, but when the man recovers, she suddenly finds herself with a healthy, vi...

Sometimes a Rogue

By Mary Jo Putney

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Even the most proper young lady yearns for adventure. But when the very well bred Miss Sarah Clarke-Townsend impulsively takes the place of her pregnant twin, it puts her own life at risk. If the k...

Not Quite a Wife

By Mary Jo Putney

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James, Lord Kirkland, owns a shipping fleet, half a London gaming house, and is a ruthlessly effective spymaster. Laurel Herbert gave James her heart as an innocent young girl, until she saw him pe...

Mischief and mistletoe

By Mary Jo Putney, Joanna Bourne

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"Christmastime in England -- a time for passionate secrets, delicious whispers, and wicked-sweet gifts by the fire. From a spirited lady who sets out to save her rakish best friend from an unsuitab...

Mischief and mistletoe

By Mary Jo Putney, Joanna Bourne

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Once a soldier

By Mary Jo Putney

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As heir to a title and great wealth, Will Masterson should have stayed home and tended his responsibilities. Instead he went to war. Now, after perilous years fighting the French, he intends his cu...

Once Dishonored

By Mary Jo Putney

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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.