The Secret Doctrine by H.P. Blavatsky is a nonfiction book focusing on the topic of Theosophy, delving into the realms of Occultism and esoteric knowledge. Published by Theosophical University Press in the United States, the trade paperback edition is illustrated and written in English by the author herself. This book, considered a classic in the genre of religion and esotericism, offers insights into the mysterious and esoteric teachings of Theosophy, making it a valuable addition to any reader interested in the occult and mystical.
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