Roni DeLuz Books

21 Pounds in 21 Days: The Martha's Vineyard Diet Detox

By James Hester, Roni Deluz

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21 Pounds in 21 Days: The Martha's Vineyard Diet Detox

By James Hester, Roni Deluz, Deluz Roni Hester James Beard Hilary

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21 Pounds in 21 Days: The Martha's Vineyard Diet Detox

By James Hester, Roni Deluz

Average: 0.00, 0 Ratings

1 pound a day

By Roni DeLuz

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"From the authors of the hit diet book, 21 Pounds in 21 Days, an expanded, simplified, month-long program to cleanse your body, as well as a new plan for keeping it clean for the rest of your life"--

1 pound a day

By Roni DeLuz

Average: 0.00, 0 Ratings

"From the authors of the hit diet book, 21 Pounds in 21 Days, an expanded, simplified, month-long program to cleanse your body, as well as a new plan for keeping it clean for the rest of your life"--

1 Pound a Day

By James Hester, Roni DeLuz

Average: 0.00, 0 Ratings

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.

Roni DeLuz Books

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

What is an EAN and How Does it Relate to an ISBN?