(3GdYQH hGdjhfSch (B((3YGde GdeYQaI (B135) / s - (3MSf fGaYIs ([S.N] : (3GdeLdS GdhWfi ddKbGaI hGdafhf hGdGOGH , s, 1989)
Keywords: (3GdfRGY GdYQHi GdGSQGFjdis; (3GdefXeGJ GdOhdjIs; (3efXeI GdjhfSchs