Joseph Calleja Books

As Coastline Is to Ocean

By Robert Callender, Talla Solais Gallery Staff, Joseph Calleja, David Cass

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Joseph Calleja

By Theresa Vella

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The Gourgion Tower Heritage Supplement

By Joseph Calleja

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A fortified farmhouse with its own moat and drawbridge, built by Giovanni Gourgion, inaugurated by Adrien de Wignacourt in 1690.

One Tenor

By Lindsay Perigo, Joseph Calleja, Simon O Neill, Derek McGovern, Anthony Kearns

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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.