(3GdRef GdQhGFi (B: (3LOdjI GdeGVi hGdMGVQ YfO LeGd GdZjWGfi ef NdGd GdRjfi HQcGJ hcJGH GdJLdjGJ (B/ s - (3YHOGdSdGe GdSccdis ([S.N] : (3ecJHI eOHhdi , s, 1992)
Keywords: (3GdGOH GdYQHis; (3GdbUU GdYQHjIs; (3JGQjN hfbOs