(3GdJLOjO hGdJGUjd ai YeGQI GdeLJeYGJ GdGSdGejI(B: (3OQGSI dJLQHI LGFRI GdGZGNGf ddYeGQI(B0 / s - (3GSeGYjd SQGL GdOjfs ([S.N] : (3LGeYI GSjhW , s, 1989)
Keywords: (3GdYeGQI hGdeLJeY GdGSdGeis; (3GdYeGQI GdGSdGejIs