John McMahon Books

Services Rendered: the Taroona Ex-Services Club and Its Members

By John McMahon, Returned Services League Of Australia

Average: 0.00, 0 Ratings

Minotaur Sampler, Volume 13

By Jenny Elder Moke, John McMahon, Sandie Jones, Melissa Larsen, Julia Spiro

Average: 0.00, 0 Ratings

An electrifying mystery featuring a troubled small-town police detective faced with three interwoven crimes that reveal sinister secrets about his community--and the deaths of his family, by the Ed...

A Good Kill

By John McMahon

Average: 0.00, 0 Ratings

The Good Detective

By John McMahon

Average: 0.00, 0 Ratings

A New York Times Book Review Top 10 Crime Novel for the Year"John McMahon is one of those rare writers who seem to have sprung out of nowhere. His first novel, The Good Detective, which is pretty m...

A Good Kill

By John McMahon

Average: 0.00, 0 Ratings

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.