William Lyster Books

The plant red data book of Egypt

By William Lyster, M. Nabil Hadidi

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The Cave Church Of Paul The Hermit: At The Monastery Of St. Paul In Egypt

By William Lyster

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The Coptic Monastery Of St. Paul By The Red Sea Grew Up Around The Cave Where Paul, The First Christian Hermit, Lived In Solitude. The Cave Served As A Shrine In Late Antiquity, Became A Church In...

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.