(3fgGjI GdGjLGR ai OQGjI GdGYLGR (B/ s - (3GdQGRi , aNQ GdOjfs; (3HcQi TjN Gejf (B((3JMbjb(B)s ([S.N] : (3OGQ GdYde ddedGjjf , s, 1985)
Keywords: (3GdfMhs; (3GddZI GdYQHjIs