(3GdbUI GdbUjQI GdeYGUQI ai GdeedcI GdYQHjI GdSYhOjI(B: (3OQGSI fbOjI (B/ s - (3eMeO UGdM GdTfWis ([S.N] : (3OGQ GdeQjN ddfTQ , s, 1987)
Keywords: (3GdGOH GdYQHis; (3GdSYhOjIs; (3GdbUI GdYQHjIs; (3GdGOH GdYGdeis