00497nam a2200181Ia 4500 180921t xxu||||| |||| 00| 0 sin d sin 621 NAT Premarathna, B.H. නැතිවම බැරි බල ශක්තිය Naethivama baeri bala shakthiya 28p., ill., 20 cm Electricity Siyabalapitiya, Thilak ed. BK 0 0 0 0 SCI MAIN MAIN 2023-06-11 621 NAT P19791 2023-06-11 2023-06-11 BK 12907 12907 LK-CoDNM LK-CoDNM LK-CoDNM LK-CoDNM