(3adSaI GdYdhe(B: (3GdefWb GdGSJbQGFi (B/ s - (3eGgQ YHOGdbGOQ eMeO Ydis ([S.N] : (3OGQ GdeYQaI GdLGeYjI , s, 1991)
Keywords: (3GdGSJbQGAs; (3GdbjGS GdefWbis; (3adSaI GdYdhes