Isolde Martyn Books

Mistress to the Crown

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The day Lord Hastings came into her husband's shop, Elizabeth saw an opportunity to separate herself from her dull, impotent husband, William Shore. The stranger might be her only chance to partake...

Lady and Unicorn

By Isolde Martyn

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The knight and the rose

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Moonlight and shadow

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The Knight And The Rose

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Moonlight and Shadow

By Isolde Martyn

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The Maiden and the Unicorn

By Isolde Martyn

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The Lady and the Unicorn

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The knight and the rose

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The Maiden and The Unicorn

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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.