(3GdGYeGd GdcGedI QHGYjGJ GQHY (B/ s - (3GdjhJ(B, (3J (B0 (3Ss; (3Jhajb UGjZs ([S.N] : (3QjGV GdQjS ddcJH hGdfTQ , s, 1990)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3GdYUQ GdMOjKs