Jack Sephiroth Books

Runic Tarot Kit

By Jaymi Elford, Zhang Chao, Jack Sephiroth

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Heaven Earth Tarot Kit

By Jaymi Elford, Jack Sephiroth

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Heaven and Earth Deck

By Jaymi Elford, Jack Sephiroth

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Runic Tarot Deck

By Jaymi Elford, Zhang Chao, Jack Sephiroth

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Now available in deck-only format, Runic Tarot brings Norse gods and mythology to the world of tarot. Each card features the wisdom of the runes, the poetry of the Skalds, and the valor of the Einh...

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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.