A Collection of Biographies of 4 Kriya Yoga Gurus by Swami Satyananda Giri: Yogiraj Shyama Charan Lahiri Mahasay, Yogacharya Shastri Mahasaya (Hansaswami Kebalanandaji Maharaj), Swami Sri Yukteshvar... This description may be from another edition of this product.