John McHugh Books

The mother of Jesus in the New Testament

By John McHugh

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The mother of Jesus in the New Testament

By John McHugh

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Encyclopedia of British and for Party Politics in Local Government

By Peter Barberis, John McHugh, Mike Tyldesley

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Getting ready to work

By John McHugh

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With the help of friends, a near-dropout in high school learns to develop a positive self-image, determine his best capabilities for a working career, and plan wisely for future job hunting.

Filling out job application forms

By John McHugh

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Uses a story line to present the skills necessary in making an application for a job.

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.