Phyllis Seckler Books

The Thoth Tarot Astrology Other Selected Writings

By Phyllis Seckler

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Kabbalah Magick and Thelema. Selected Writings Volume II

By Lon Milo Duquette, Rorac Johnson, Phyllis Seckler

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The Kabbalah, Magick, and Thelema. Selected Writings Volume II

By Phyllis Seckler

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The Thoth Tarot, Astrology, and Other Selected Writings

By Phyllis Seckler

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Phyllis Seckler (1917-2004) was introduced to the teachings of Aleister Crowley in the late 1930s and became a regular participant in the activities of Agape Lodge of the Ordo Templi Orientis in Ca...

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.