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Richard Liu 生命奧秘全書007:大道靈學探討與研究之機緣(體驗篇): The Great Tao of Spiritual Science Series 07: The Opportunity to Discovery and Research The Great Tao (The Experience Volume)
 Richard Liu 生命奧秘全書007:大道靈學探討與研究之機緣(體驗篇): The Great Tao of Spiritual Science Series 07: The Opportunity to Discovery and Research The Great Tao (The Experience Volume)
Richard Liu 生命奧秘全書010:謙卑踏上靈性的道路──人生是靈魂修煉的道場(處世篇): The Great Tao of Spiritual Science Series 10: Humbling Oneself on the Spiritual Path Life is a Training Ground for the Soul (Practical Volume)
 Richard Liu 生命奧秘全書010:謙卑踏上靈性的道路──人生是靈魂修煉的道場(處世篇): The Great Tao of Spiritual Science Series 10: Humbling Oneself on the Spiritual Path Life is a Training Ground for the Soul (Practical Volume)
Richard Liu