Penny Kelly Books

The Evolving Human

By Penny L. Kelly

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From the Soil to the Stomach

By Penny L. Kelly

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2003 Moon Sign Book

By Llewellyn Publications, Sharon Leah, Gloria Star

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2010 Llewellyn s moon sign book

By Llewellyn Publications

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Llewellyn s 2016 moon sign book

By Jennifer Ackman

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With lunar timing tips on planting and harvesting and a guide to companion plants, Llewellyn's Moon Sign Book is a gardener's best friend. Additionally, discover tips on how to get and stay healthy...

Llewellyn s 2017 Moon Sign Book Conscious Living by the Cycles of the Moon Llewellyn s Moon Sign Books

By Mireille Blacke, Nicole Nugent, Kris Brandt Riske MA, Bruce Scofield, Dallas Jennifer Cobb, Christeen Skinner, Michelle Perrin, Llewellyn Publications, Amy Herring, Robin Ivy Payton, Penny Kelly, Charlie Rainbow Wolf, Sally Cragin

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The Evolving Human

By Penny L. Kelly

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The Elves of Lily Hill Farm

By Penny Kelly

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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.