Mary Jo Putney Books

"Laurel Herbert married James, Lord Kirkland, as an innocent young girl. When she saw him perform an act of shocking violence, she declared she never wanted to see him again. Now, ten years later,...

Not always a saint

By Mary Jo Putney

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"In this Regency Romance, Daniel Herbert has come to London in search of a wife, someone sensible who can oversee his newly inherited properties, leaving him free to pursue his life's work as a doc...

Seven Reflective Elastic Drying Women s Yoga Quick Pants Pants Point Tight Yoga Yoga Pants Women Breathable Yoga Pants Grey

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Once a Spy

By Mary Jo Putney

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A Yuletide Kiss

By Sabrina Jeffries, Mary Jo Putney, Beverley A. Crick, Madeline Hunter

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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.