Teresa Tapp Books

Fit and Fabulous in 15 Minutes

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Fit and Fabulous in 15 Minutes

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She has sold over three million workout videos. Her nationwide seminars attract crowds of 1,500 plus. Her website receives more than 90,000 hits a day, mostly from T-Tappers who support one another...

Fit and Fabulous in 15 Minutes

By Teresa Tapp, Barbara Smalley

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“The T-Tapp system is the ideal anti-aging workout. Highly recommended!”–Nicholas Perricone, M.D., New York Times bestselling author The most efficient and effective workout you’ll ever do!Imagine...

Fit and Fabulous in 15 Minutes

By Teresa Tapp

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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.