Rob McMahon Books

More Erotica From Penthouse

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WHAT DO WOMEN WANT? To the age-old question, Penthouse has the answer: Great sexlots of itin every variation! Here, in these pages, you'll meet women of all ages and from all walks of life, with o...

Erotica From Penthouse Iii

By Rob McMahon, Rob, MCMAHON, Penthouse Magazine, Penthouse

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WHAT DO WOMEN WANT? To the age-old question, Penthouse has the answer: Great sexlots of itin every variation! Here, in these pages, you'll meet women of all ages and from all walks of life, with o...

take this Out To The Ball Game! From usa Today comes A Fun, One-stop Shop For Baseball Lovers. Featuring 100 Red-and-blue Scorecards (more Than Enough For All The Home Games) And A Section For Auto...

Digital Self-Determination : Aboriginal Peoples And The Network Societ...

By Rob McMahon

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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.