Thuri Calafia Books

Llewellyn s 2015 witches spell a day almanac

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Llewellyn s 2015 Sabbats Almanac

By Blake Octavian Blair, Dallas Jennifer Cobb, Linda Raedisch, Sybil Fogg, Suzanne Ress

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Dedicant: A Witch'S Circle Of Fire

By Thuri Calafia

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You’ve heard that dreamlike voice calling to you: a yearning to work with the earth’s life energies . . . a heartfelt desire to become a student of the Craft. Now is the time to call forth your pas...

Llewellyns Sabbats Almanac Llewellyns Sabbats Almanac

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Initiate

By Thuri Calafia

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Llewellyn's 2017 Witches' Calendar

By Monica Crosson, Blake Octavian Blair, Elizabeth Barrette, Deborah Blake, Thuri Calafia, Dallas Jennifer Cobb, Barbara Ardinger, Sybil Fogg

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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.