Mark Mazzarella Books

Reading People: How to Understand People and Predict Their Behaviour Anytime, Anyplace

By Jo Ellan Dimitrius, Mark Mazzarella

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Put Your Best Foot Forward

By Jo Ellan Dimitrius, Mark Mazzarella

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Put Your Best Foot Forward

By Jo Ellan Dimitrius, Mark Mazzarella

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Gay straight and accepted

By Mark Mazzarella, Tony Mazzarella

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"Life can get confusing for adolescents when they begin to develop sexual attractions. Through the perspective of straight teenagers, we meet students coming to terms with how they feel and dealing...

Kono hito wa naze jibun no hanashi bakari suru no ka

By Jo Ellan Dimitrius

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A Primera Vista

By Jo Ellan Dimitrius

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Der erste Blick. Anleitung zur Menschenkenntnis

By Jo Ellan Dimitrius

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Mazz Florida Dreamscapes 2

By Mark Mazzarella, Historical Society

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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.