Steven D. Farmer Books

Power Animals

By Steven D. Farmer

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Power Animal Oracle Cards

By Steven D. Farmer Ph.D.

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Power animals are spirit guides in animal form who provide protection, guidance, and healing. This deck of 44 oracle cards by Steven Farmer will connect you with animal spirit guides who will advis...

Animal Spirit Guides

By Steven D. Farmer Ph.D.

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After the publication of his best-selling book Power Animals, many people inquired about the meaning of spirit animals that were not contained in that work. In Animal Spirit Guides, Dr. Farmer prov...

Messages From Your Animal Spirit Guide CD

By Steven D. Farmer

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Sacred Ceremony

By Steven Farmer

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Esprits Guides Animaux

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Buyulu Kehanet Kartlari

By Steven D. Farmer

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Magia de la tierra

By Inmaculada Morales Lorenzo, Steven D. Farmer

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Childrens Spirit Animal Cards

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Pocket Guide to Spirit Animals

By Dr. Steven Farmer

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Following the publication of the popular and best-selling Animal Spirit Guides, several people commented that they would like to see a smaller pocket-sized version—one they could carry in the...

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.