Robert Lyndon Books

"In the world after 1066, vast empires clamor for dominance. From the Normans in the north to the Byzantines in the south, battles rage across Europe and around its fringes. But in the east, an emp...

Imperial fire

By Robert Lyndon

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Imperial fire

By Robert Lyndon

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Hawk quest

By Robert Lyndon

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It is 1072, and the Normans have captured England. The Turks have captured a Norman knight. And in order to free him, a soldier named Vallon must capture four rare hawks. On a heart-stopping journe...

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.