John J. Ouellette Books

The Mold Survival Guide

By Charles Reed, Connie L. May, John J. Ouellette, Jeffrey C. May

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The Mold Survival Guide: For Your Home And For Your Health

By Jeffrey C. May, Charles Reed, John J. Ouellette, Connie L. May, May, Mr. Jeffrey C., May, Ms. Connie L., Ouellette MD, Professor John J., Reed, Professor Charles

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Mold may be part of the natural world, but elevated levels of household mold and mildew are indoor pollutants that can cause serious health problems. Mold can flourish in older houses as well as in...

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.