15 books • 5 series
The Dawn & Twilight of Zorastrianism
Hindu and Muslim Mysticism (Religious Studies: Bloomsbury Academic Collections)
Hindu Scriptures
Zen, Drugs, and Mysticism
The City Within the Heart (Mandala Books)
Teachings of the Magi
The Dawn and Twilight of Zoroastrianism
Our Savage God
The Bhagavad-gita (Galaxy Books, #389)
Drugs, Mysticism and Make-believe
Dialectical Christianity and Christian Materialism (British Academy Proceedings: Riddell Memorial Lecture)
Evolution in Religion
Concordant Discord
Hinduism (OPUS)
Mysticism Sacred and Profane (Galaxy Books)