Malcolm C. Duncan Books

Duncan's Ritual of Freemasonry

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An elegantly illustrated handbook of Freemasonic ritualExplained and interpreted by copious notes and numerous engravings. Duncan's Masonic Ritual and Monitor will be a cherished possessi...

Duncan's Ritual of Freemasonry

By Malcolm C. Duncan

Average: 0.00, 0 Ratings

Unabridged and Unaltered, a Fully Illustrated Third Edition detailing Masonic Initiation Rituals, along with Grips, Passwords and Ceremonial Objects, to include the Three Basic Degrees of the Ancie...

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.