Masthya Yantra Mahima By M . Satyanarayana Siddanthi (Mantra Sastralu - Mantralu - Yantralu) Rs. 50 Rs. 45 Masthya Yantra Mahima By M . Satyanarayana Siddanthi (Mantra Sastralu - Mantralu - Yantralu) Rs. 50 Rs. 45