(3CVhGA Ydi ehGba GdeSJTQbhf h GdeHTQjf (B/ s - (3CHh Ndjd, Thbjs ((3WQGHdS (B((3djHjG(B) :s, 1991)
Keywords: (3GdESJTQGb h GdeSJTQbhfs; (3GdMVGQI GdESdGejIs