(3Gdafhf GdGSdGejI(B: (3GYeGd GdfOhIGdYGdejIGdefYbOI ai GSJGfHhd (B1983(3e (B/ s - (3GMeO eMeO YjSis; (3JMSjf YeQ Wg ChZdis ([S.N] : (3eQcR GdGHMGK ddJGQjN hGdafhf hGdKbGaI , s, 1989)
Keywords: (3GdJQGK GdGSdGeis; (3GdNW GdYQHis; (3GdfbhT GdYQHjIs; (3GdJPhb Gdafis; (3Gdaf GdGSdGeis