Bob Halloran Books

Irish Thunder

By Bob Halloran, Bronson Pinchot

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White devil

By Bob Halloran

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"In 2013, "Bac Guai" John Willis, aka White Devil, was sentenced for drug trafficking and money laundering ... was "leader of a vast conspiracy." Journalist Bob Halloran tells the tale of the only...

Irish Thunder The Hard Life and Times of Mickey Ward

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Fellowship of the No Longer Miserable

By Bob Halloran

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Count the Rings

By B. O. B. HALLORAN

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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.